TY  - BOOK
AU  - Simmons, George F
AU  - Robertson, John S
TI  - Differential equations with applications and historical notes
SN  - 71128077
CY  - New York
KW  - Boundary value problems -- Partial differential equations
KW  - Differential equations
KW  - Mathematical physics -- Special equations
KW  - Mathematics
N1  - Includes index
ER  -