@article{ZVMMF_1977_17_5_a4,
     author = {V. I. Meleshko},
     title = {A pseudo-inversion of closed operators that is stable under perturbations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1132--1143},
     year = {1977},
     volume = {17},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1977_17_5_a4/}
}