@article{VMJ_1999_1_1_a2,
     author = {A. G. Kusraev},
     title = {Nonstandard analysis of linear and nonlinear operators},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {30--36},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_1999_1_1_a2/}
}