TY  - BOOK
AU  - Ladde G S
AU  -  Lakshmikantham V
AU  -  Vatsala A S
TI  - Monotone iterative techniques for nonlinear differential equations
T2  - Monographs advanced texts and surveys and applied mathematics
U1  - B334:1, M5 
PY  - 1985///
CY  - Boston
PB  - Pitman         
KW  - Differential equations
ER  -