@article{MV_1976_28_2_a8,
     author = {T. St. Nikolova and D. D. Bainov},
     title = {Sushchestvovanie i edinstvennost' re\v{s}eniya odnoj kraevoj zada\v{c}i dlya differencial'nogo uravneniya pervogo poryadka sverhnejtral'nogo tipa s parametrom},
     journal = {Matemati\v{c}ki vesnik},
     pages = {187 },
     year = {1976},
     volume = {28},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/MV_1976_28_2_a8/}
}