H. T. Stokes, "Introduction to Isotropy Subgroups and Displacive Phase Transitions," unpublished (2006).

H. T. Stokes and D. M. Hatch, Isotropy Subgroups of the 230 Crystallographic Space Groups (World Scientific, Singapore, 1988), 624 pages.

H. T. Stokes and D. M. Hatch, "Equivalence among Isotropy Subgroups
of Space Groups," *Phys. Rev. B* **31**, 7462-7464 (1985).

D. M. Hatch and H. T. Stokes, "Phase Transitions in Solids of
Diperiodic Symmetry," *Phys. Rev. B* **31**, 4350-4354 (1985).

D. M. Hatch and H. T. Stokes, "Symmetry-Restricted Phase
Transitions in Two-Dimensional Solids," *Phys. Rev. B* **30**, 5156-5166 (1984).

H. T. Stokes and D. M. Hatch,
"Group-Subgroup Structural Phase Transitions: A Comparison with
Existing Tables," *Phys. Rev. B*
**30**, 4962-4967 (1984). Erratum published in
*Phys. Rev. B* **31**, 4700 (1985).

H. Liu, W. Zhang, P. S. Halasyamani, H. T. Stokes, B. J. Campbell,
J. S. O. Evans, and I. R. Evans, "Understanding the Behaviour of the
Room-Temperature Molecular Ferroelectric
5,6-Dichloro-2-methylbenzimidazole Using Symmetry Adapted Distortion
Mode Analysis" *J. Am. Chem. Soc.* **140**, 13441-13448
(2018).

J. W. Lewis, J. L. Payne, I. R. Evans, H. T. Stokes, B. J. Campbell, and
J. S. O. Evans, "An Exhaustive Symmetry Approach to Structure Determination:
Phase Transitions in Bi_{2}Sn_{2}O_{7},"
*J. Amer. Chem. Soc.* **138**,
8031-8042 (2016).

B.J. Campbell, S. Rosenkranz, H.J. Kang, H.T. Stokes, P.J. Chupas,
S. Komiya, Y. Ando, Shiliang Li, and Pengcheng Dai, "Long-Range Two-Dimensional
Superstructure in the Superconducting Electron-Doped Cuprate
Pr_{0.88}LaCe_{0.12}CuO_{4}",
*Phys. Rev. B* **92**,
014118-1-7 (2015).

M. Muller, R. E. Dinnebier, A.-C. Dippel, H. T. Stokes, and B. J. Campbell,
"A Symmetry-Mode Description of Rigid-Body Rotations in Crystalline Solids: A
Case Study of Mg(H_{2}O)_{6}RbBr_{3}."
*J. Appl. Cryst.* **47**,
532-538 (2014).

C. Mshumi, C. I. Lang, L. R. Richey, K. C. Erb, C. W. Rosenbrock,
L. J. Nelson, R. R. Vanfleet, H. T. Stokes, B. J. Campbell, and G. L. W. Hart,
"Revisiting the CuPt_{3} Prototype and the L1_{3} Structure."
*Acta Materialia* **73**,
326-336 (2014).

C. J. Howard, B. J. Campbell, H. T. Stokes, M. A. Carpenter, and
R. I. Thomson, "Crystal and Magnetic Structures of Hexagonal YMnO_{3}."
*Acta Cryst. B* **69**,
534-540 (2013).

S. Kerman, B. J. Campbell,
K. K. Satyavarapu, H. T. Stokes, F. Perselli, and J. S. O. Evans, "The
Superstructure Determination of Displacive Distortions via
Symmetry-Mode Analysis,"
*Acta
Cryst. A* **68**, 222-234 (2012).

M. Muller, R. E. Dinnebier, N. Z. Ali, B. J. Campbell, and M. Jansen,
"Direct Access to the Order Parameter: Parameterized Symmetry Modes and Rigid
Body Movements as a Function of Temperature",
*Materials Science Forum*
**651**, 79-95 (2010).

B. J. Campbell, J. S. O. Evans, F. Perselli, and H. T. Stokes, "Rietveld refinement of structural distortion-mode amplitudes,"
*IUCr Comput. Commiss. Newslett.* **8**,
81-95 (2007).

C. J. Howard and H. T. Stokes, "Structures and Phase Transitions in
Perovskites - a Group-Theoretical Approach," *Acta Cryst. A* **61**, 93-111
(2005).

C. J. Howard and H. T. Stokes, "Octahedral Tilting in
Cation-Ordered Perovskites - a Group-Theoretical
Analysis," *Acta
Cryst. B* **60**, 674-684 (2004).

H. T. Stokes, E. H. Kisi, D. M. Hatch, and C. J. Howard, "Group
Theoretical Analysis of Octahedral Tilting in Ferroelectric
Perovskites," *Acta
Cryst. B* **58**, 934-936 (2002).

C. J. Howard and H. T. Stokes, "Group Theoretical Analysis of
Octahedral Tilting in Perovskites," *Acta Cryst. B* **54**, 782-789 (1998).
Erratum in *Acta
Cryst. B* **58**, 565 (2002).

D. M. Hatch, H. T. Stokes,
K. S. Aleksandrov, and S. V. Misyul, "Phase Transitions in the
Perovskitelike A_{2}BX_{4 }Structure,"
*Phys.
Rev. B* **39**, 9282-9288 (1989).

D. M. Hatch and H. T. Stokes, "Classification of Octahedral Tilting
Phases in the Perovskitelike A_{2}BX_{4}
Structure," *Phys.
Rev. B* **35**, 8509-8516 (1987). "Erratum published in *Phys. Rev.
B* **36**, 7185 (1987).

J. W. Lewis, J. L. Payne, I. R. Evans, H. T. Stokes, B. J. Campbell, and
J. S. O. Evans, "An Exhaustive Symmetry Approach to Structure Determination:
Phase Transitions in Bi_{2}Sn_{2}O_{7},"
*J. Amer. Chem. Soc.* **138**,
8031-8042 (2016).

M. Muller, R. E. Dinnebier, A.-C. Dippel,
H. T. Stokes, and B. J. Campbell, "A Symmetry-Mode Description of Rigid-Body
Rotations in Crystalline Solids: A Case Study of
Mg(H_{2}O)_{6}RbBr_{3},"
*J. Appl. Cryst.*
**47**, 532-538 (2014).

S. Kerman, B. J. Campbell,
K. K. Satyavarapu, H. T. Stokes, F. Perselli, and J. S. O. Evans, "The
Superstructure Determination of Displacive Distortions via
Symmetry-Mode Analysis,"
*Acta
Cryst. A* **68**, 222-234 (2012).

B. J. Campbell, J. S. O. Evans, F. Perselli, and H. T. Stokes, "Rietveld refinement of structural distortion-mode amplitudes,"
*IUCr Comput. Commiss. Newslett.* **8**,
81-95 (2007).

B. J. Campbell, H. T. Stokes,
D. E. Tanner, and D. M. Hatch, "ISODISPLACE: An Internet Tool for
Exploring Structural Distortions,"
*J. Appl. Cryst.* **39**, 607-614 (2006).

B. J. Campbell, H. T. Stokes, T. B. Averett, S. Machlus, and
C. J. Yost, "The ISOTILT Software for Discovering Cooperative
Rigid-Unit Rotations in Networks of Interconnected Rigid Units" *J. Appl. Cryst.* **54**,
1847-1856 (2021). Supporting information.

B. J. Campbell, H. T. Stokes, T. B. Averett, S. Machlus, and
C. J. Yost, "Theoretical and Computational Improvements to the
Algebraic Method for Discovering Cooperative Rigid-Unit Modes" *J. Appl. Cryst.* **54**,
1664-1675 (2021).

B. Campbell, C. J. Howard, T. B. Averett, T. A. Whittle,
S. Schmid, S. Machlus, C. Yost, and H. T. Stokes, "An Algebraic
Approach to Cooperative Rotations in Networks of Interconnected Rigid
Units" *Acta Cryst.*
**A74**, 408-424 (2018).

H. T. Stokes and B. J. Campbell, "A General Algorithm for Generating
Isotropy Subgroups in Superspace," *Acta Cryst. A* **73**, 4-13 (2017).

H. T. Stokes, B. J. Campbell, and R. Cordes, "Tabulation
of Irreducible Representations of the Crystallographic Space Groups
and Their Superspace Extensions," *Acta Cryst. A*. **69**,
388-395 (2013).

S. van Smaalen, B. J. Campbell, and H. T. Stokes, "Equivalence of
Superspace Groups," *Acta Cryst. A* **69**, 75-90 (2013).

H. T. Stokes, B. J. Campbell, and
S. van Smaalen, "Generation of (3+d)-Dimensional Superspace Groups for
Describing the Symmetry of Modulated Crystalline Structures,"
*Acta
Cryst. A* **67**, 45-55 (2011).

H. T. Stokes, B. J. Campbell, and D. M. Hatch, "Order Parameters
for Phase Transitions to Structures with One-Dimensional
Incommensurate Modulations," *Acta Cryst. A* **63**, 365-373 (2007).

H. T. Stokes, B. J. Campbell, and R. Cordes, "Tabulation
of Irreducible Representations of the Crystallographic Space Groups
and Their Superspace Extensions," *Acta Cryst. A*. **69**,
388-395 (2013).

O. V. Kovalev, Representations of the Crystallographic Space Groups: Irreducible Representations, Induced Representations and Corepresentations, edited by H. T. Stokes and D. M. Hatch (Gordon and Breach, Amsterdam, 1993), 390 pages.

H. T. Stokes, D. M. Hatch, and J. S. Kim, "Images of Physically
Irreducible Representations of the 230 Space Groups," *Acta Cryst. A* **43**, 81-84
(1987).

A. P. Cracknell, B. L. Davies, S. C. Miller, and W. F. Love,
*Kronecker Product Tables*, Vol. 1 (Plenum, New York, 1979).
Based on S. C. Miller and W. F. Love, *Tables of Irreducible
Representations of Space Groups and Co-Representations of Magnetic
Space Groups* (Pruett, Boulder, 1967).

H. T. Stokes, J. Gunter,
D. M. Hatch, J. Dong, H. Wang, and J. P. Lewis, "Bilayer Sliding
Mechanism for the Wurtzite-to-Rocksalt Transition,"
*Phys. Rev. B* **76**, 012102-1-4 (2007).

D. M. Hatch, H. T. Stokes, J. Dong, J. Gunter, H. Wang, and
J. P. Lewis, "Bilayer Sliding Mechanism for the Zinc-blende to
Rocksalt Transition in SiC," *Phys. Rev. B* **71**, 184109-1-9 (2005).

H. T. Stokes and D. M. Hatch,
"Procedure for Obtaining Microscopic Mechanisms of Reconstructive
Phase Transitions in Crystalline Solids,"
*
Phys. Rev. B* **65**, 144114-1-12 (2002).

H. T. Stokes, S. van Orden, and B. J. Campbell, "ISOSUBGROUP: an Internet
Tool for Generating Isotropy Subgroups of Crystallographic Space Groups,"
*J. Appl Cryst.* **49**,
1849-1853 (2016).

H. T. Stokes and D. M. Hatch, "FINDSYM:
Program for Identifying the Space Group Symmetry of a Crystal,"
*J. Appl. Cryst.* **38**, 237-238 (2005).

D. M. Hatch and H. T. Stokes,
"INVARIANTS: Program for Obtaining a List of Invariant Polynomials of
the Order Parameter Components Associated with Irreducible
Representations of a Space Group,"
*J. Appl. Cryst.* **36**, 951-952 (2003).

D. M. Hatch and H. T. Stokes, "COPL:
Program for Obtaining a Complete List of Order Parameters for a
Group-Subgroup Crystalline Phase Transition,"
*J. Appl. Cryst.* **35**, 379 (2002).

D. M. Hatch and H. T. Stokes,
"The Complete Listing of Order Parameters for a Crystalline Phase Transition:
A Solution to the Generalized Landau Problem,"
*Phys. Rev. B* **65**, 014113-1-4 (2002).

H. T. Stokes and D. M. Hatch, "Coupled Order Parameters in the
Landau Theory of Phase Transitions in Solids," *Phase Transitions ***34**, 53-67
(1991).

H. T. Stokes, "Using Symmetry in Frozen Phonon
Calculations," *Ferroelectrics***164**, 183-188 (1995).

H. T. Stokes, D. M. Hatch, and J. D. Wells, "Group-Theoretical
Methods for Obtaining Distortions in Crystals: Applications to
Vibrational Modes and Phase Transitions," *Phys. Rev. B* **43**, 11010-11018 (1991).

D. M. Hatch, H. T. Stokes, and R. M. Putnam, "Symmetry Analysis of
the Microstructure and Phase Transitions of a Crystallographic Space
Group: Applications," *Phys. Rev. B* **35**, 4935-4942 (1987).

D. M. Hatch and H. T. Stokes, "Practical Algorithm for Identifying
Subgroups of Space Groups,"*Phys. Rev. B ***31**, 2908-2912 (1985).