TY  - BOOK
AU  - Simmons, George F. 
TI  - Differential equations with applications and historical notes 3rd ed. 
SN  - 9781498702591
U1  - 515.35 (R) 
PY  - 2017///
PB  - CRC Press Boca Raton London ; 
KW  - Mathematics
ER  -