Lakshmikantham, V., 1926- Theory of differential equations in cones / by V. Lakshmikantham, S. Leela, A.S. Vatsala. - Cambridge : Cambridge Scientific Publishers, c2011. - viii, 284 p. : ill. ; 24 cm. Includes bibliographical references (p. 275-281) and index. ISBN: 9781904868965 (Cloth) RM137.55 1904868967 (Cloth) Subjects--Topical Terms: Differential equations.