@article{GMJ_2004__11_1_51402, author = {Ramishvili, I. and Tadumadze, T.}, title = {Formulas of variation for a solution of neutral differential equations with continuous initial condition.}, journal = {Georgian Mathematical Journal}, pages = {155--175}, publisher = {mathdoc}, volume = {11}, number = {1}, year = {2004}, zbl = {1065.34080}, language = {en}, url = {http://geodesic.mathdoc.fr/item/GMJ_2004__11_1_51402/} }