"On periodic solutions of first order nonlinear functional differential equations of non-Volterra.and.s type." . . . . . "RIV/67985840:_____/01:05025147" . "On periodic solutions of first order nonlinear functional differential equations of non-Volterra.and.s type."@en . "689915" . "P\u016F\u017Ea, B." . "Hakl, Robert" . "[BAA1ECCCF803]" . "83;105" . "P(GA201/99/0295), Z(AV0Z1019905)" . . "1" . . "Memoirs on Differential Equations and Mathematical Physics" . "On periodic solutions of first order nonlinear functional differential equations of non-Volterra.and.s type." . "GE - Gruzie" . "Lomtatidze, Alexander" . "On periodic solutions of first order nonlinear functional differential equations of non-Volterra.and.s type."@en . . . . "1512-0015" . "RIV/67985840:_____/01:05025147!RIV/2003/AV0/A05003/N" . . "23"^^ . . "nonlinear functional differential equations%periodic solutions%existence and uniqueness"@en . . "2"^^ . "3"^^ . "Nonimprovable effective sufficient conditions for the existence and uniqueness of an omega-periodic solution of the equation u.and.(t)=f(u)(t),where f is a continuous omega-periodic functions into the Banach space of omega-periodic Lebesque integrable functions and satisfying the Caratheodory conditions, are established." . "0"^^ . . "0"^^ . . "Nonimprovable effective sufficient conditions for the existence and uniqueness of an omega-periodic solution of the equation u.and.(t)=f(u)(t),where f is a continuous omega-periodic functions into the Banach space of omega-periodic Lebesque integrable functions and satisfying the Caratheodory conditions, are established."@en . . . "24" .