ON SOME PROPERTIES OF ELLIPTIC AND PARABOLIC FUNCTIONAL DIFFERENTIAL OPERATORS ARISING IN NONLINEAR OPTICS Article Varfolomeev E.M. Journal of Mathematical Sciences (United States). Springer New York LLC. Vol. 153. 2008. P. 649-682
ANDRONOV-HOPF BIFURCATION FOR QUASI-LINEAR PARABOLIC FUNCTIONAL DIFFERENTIAL EQUATIONS WITH TRANSFORMATIONS OF SPATIAL VARIABLES Article Varfolomeev E.M. Russian Mathematical Surveys. Vol. 62. 2007. P. 398-400
THE NORMALITY OF SOME ELLIPTIC FUNCTIONAL-DIFFERENTIAL OPERATORS OF SECOND ORDER Article Varfolomeev E.M. Russian Mathematical Surveys. Vol. 61. 2006. P. 184-185