TY  - BOOK
AU  - Muzsnay Z
TI  - Variational Principles for Second-Order Differential Equations, Application of the Spencer Theory Of
SN  - 9789812813596
PB  - World Scientific
KW  - Mathematics
UR  - https://www.worldscientific.com/worldscibooks/10.1142/3996#t=toc
ER  -