Giordano, Frank R. Differential equations :a modeling approach . - Reading, Mass.; N.Y.: Addison- Wesley Pub. Co., 1988. - xiv, 672p.; 25cm "N" ISBN: "0-201-17208-9" Subjects--Topical Terms: 1. Differential equations 2. Mathematical models. Subjects--Index Terms: "Y" LC Class. No.: QA371 / .G56