TY  - BOOK
AU  - Cerveny V.
TI  - Seismic ray theory
SN  - 0521366712
AV  - QE 538.5 .C4
PY  - 2001///
CY  - USA
PB  - Cambridge University press
KW  - Seismic waves
KW  - Mathematical models
N1  - include bibliographical reference and index
ER  -