H. T. Stokes, "Introduction to Isotropy Subgroups and Displacive Phase Transitions," unpublished (2006).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

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).

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, 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).

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).

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 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).