@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},
     year = {2004},
     volume = {11},
     number = {1},
     zbl = {1065.34080},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_2004__11_1_51402/}
}