TY  - BOOK
AU  - Holm P
AU  - Lothe J
TI  - Nature of the sound wave polarization field for aniso tropic elastic media without acoustic axes the criterion for the presence of acoustic axes
U1  - 534.20151 
PY  - 1979///
CY  - Oslo
PB  - University
KW  - Acoustic axes
KW  - Mathematics
ER  -