ON THE EXISTENCE OF VARIATIONAL PRINCIPLES FOR A CLASS OF THE EVOLUTIONARY DIFFERENTIAL-DIFFERENCE EQUATIONS Article Kolesnikova I.A., Savchin V.M. Journal of Function Spaces and Applications. 2012.
ON BELLMAN-GOLUBOV THEOREMS FOR THE RIEMANN-LIOUVILLE OPERATORS Article Zung P.T. Journal of Function Spaces and Applications. Vol. 7. 2009. P. 289-300
ON VARIATIONAL FORMULATIONS FOR FUNCTIONAL DIFFERENTIAL EQUATIONS Article Kolesnikova I.A., Popov A.M., Savchin V.M. Journal of Function Spaces and Applications. Vol. 5. 2007. P. 89-101
ON INDIRECT VARIATIONAL FORMULATIONS FOR OPERATOR EQUATIONS Article Budotchkina S.A., Savchin V.M. Journal of Function Spaces and Applications. Vol. 5. 2007. P. 231-242