@article{KUKTF_1977_1_1_a6,
     author = {S. S. Musina},
     title = {Construction of approximations for an integro-differential equation},
     journal = {Konstruktivnaya Teoriya Funktsii i Funktsional'nyi Analiz},
     pages = {40--44},
     year = {1977},
     volume = {1},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKTF_1977_1_1_a6/}
}