Pavel, N. H. Differential equations, flow invariance and applications/ N. H. Pavel. - Boston: Pitman, 1984. - 246 p. ; 25 cm. - Pitman Research Notes in Mathematics Series; 113. . "Pitman advanced publishing program." Includes index. Bibliography: p. 233-243. ISBN: 0273086510 : $20.00 LCCN: 84014811 Subjects--Topical Terms: Differential equations, Nonlinear.Operator equations, NonlinearNonlinear operators Dewey Class. No.: 515.35 / P337d