TY  - BOOK
AU  - Butler,Philip H.
TI  - Point group symmetry applications: methods and tables 
SN  - 0306405237
PY  - 1981///
CY  - New York
PB  - Plenum Press
KW  - Symmetry groups
KW  - Point defects
KW  - Crystallography, Mathematical
N1  - Includes index; Bibliography: p.553-556
ER  -