@article{DE_1993_29_8_a19,
     author = {\`E. M. Aksen' and N. J. Yurchuk},
     title = {An a priori estimate for the quasi-inversion method},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1447--1450},
     publisher = {mathdoc},
     volume = {29},
     number = {8},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1993_29_8_a19/}
}