An introduction to nonlinear boundary value problems
Stephen R. Bernfeld, V. Lakshmikantham.
New York : Academic Press, 1974.
xi, 386 págs. ; 24 cm.
Serie: Mathematics in science and engineering ; v. 109
ISBN: 0120931508
Bibliografía: p. 368-383.
Reseña: MathSciNet, 56 #3393