TY  - BOOK
AU  - Achenbach J D
AU  -  Gautesen A K
AU  -  McMaken H
TI  - Ray methods for waves in elastic solids
T2  - Monographs and studies in mathematics; 14
U1  - B85, M2 
PY  - 1982///
CY  - Boston
PB  - Pitman Advanced Pub       
KW  - Wave functions
ER  -