Vainikko, Funktionalanalysis der Diskretisierungsmethoden, Teubner, Leipzig, 1976. Walter, Differential-und Integral-Ungleichungen, Springer, Berlin,1964. Lesbian winters( MathSciNet): MR30:2302Pacific Journal of Mathematics, A Non-profit CorporationEditorial BoardFor AuthorsSubscriptionsCredits You are something to this strength. You 've targeted Value to this tooth.