@article{PIM_1985_N_S_38_52_a17,
     author = {Drumi D. Bainov and S. D. Milusheva},
     title = {Justifcation of the {Averaging} {Method} for {Functional-Differential} {Equations} with {Maximums}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {149 },
     publisher = {mathdoc},
     volume = {_N_S_38},
     number = {52},
     year = {1985},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1985_N_S_38_52_a17/}
}