@article{ZVMMF_1980_20_1_a6,
     author = {A. D. Ziv and B. A. Samokish},
     title = {A posteriori estimate for the inverse operator of a degenerate two-point boundary value problem},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {77--83},
     year = {1980},
     volume = {20},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1980_20_1_a6/}
}