TY  - BOOK
AU  - Simmons, George F. & Krantz, Steven G.
TI  - Differential equations: Theory, technique, and practice
SN  - 978-007-125437-3
U1  - Cir. 515.35 Si41 c2007 
PY  - 2007///
CY  - New York
PB  - McGraw-Hill Companies, Inc.
ER  -