Rp. Agarwal et Pyh. Pang, OPIAL-TYPE INEQUALITIES INVOLVING HIGHER-ORDER DERIVATIVES, Journal of mathematical analysis and applications, 189(1), 1995, pp. 85-103
In this paper we offer very general Opial-type inequalities involving
higher order derivatives. From these inequalities we then deduce exten
ded and improved versions of several recent results. (C) 1995 Academic
Press, Inc.