TY  - BOOK
AU  - Degasperis A & Gaeta G
TI  - Symmetry and Perturbation Theory: Spt 98
SN  - 9789812833037
PB  - World Scientific
KW  - Mathematics
UR  - https://www.worldscientific.com/worldscibooks/10.1142/4299#t=toc
ER  -