Monotone difference schemes for semilinear elliptic equations with mixed derivatives and robin boundary conditions

Brayanov, I., & Kandilarov, J. (). Monotone difference schemes for semilinear elliptic equations with mixed derivatives and robin boundary conditions. // <I>FDM: T&A '06<D> : Proceedings of Fourth International conference ''Finite difference methods : Theory and applications, Lozenetz, Bulgaria, 2006. - Русе, 2007, p. 155-160..