TY  - BOOK
AU  - Goursat, Edougard
AU  - Bergmann, Howard G., tr.
TI  - A Course in malthematical analysis: vol. 3, pt. 1, variation of solutions partial differential equations of the second order
PY  - 1964///
CY  - New York
PB  - Dover Publications
KW  - Differential Calculus
KW  - Differential Equations
KW  - NASA Thesaurus
ER  -