@article{MV_1975_27_1_a0,
     author = {D. D. Bainov and S. D. Milu\v{s}eva},
     title = {Metody usredneniya dla odnoj dvuhto\v{c}e\v{c}noj kraevoj zada\v{c}i dlya sistem integro-differencial'nyh uravnenij},
     journal = {Matemati\v{c}ki vesnik},
     pages = {3 },
     publisher = {mathdoc},
     volume = {27},
     number = {1},
     year = {1975},
     url = {http://geodesic.mathdoc.fr/item/MV_1975_27_1_a0/}
}