TY  - BOOK
AU  - Poluyanov, Leonid V. 
AU  - Antonio Aguilar 
AU  - Miguel Gonzalez 
TI  - Group properties of the acoustic differential equation
SN  - 0 7484 0280 2
PY  - 1995///
CY  - London 
PB  - Taylor & Francis 
N1  - Bibliog on p 147-148
ER  -