@article{IVM_1989_3_a7,
     author = {M. B. Muratbekov and M. Otelbaev},
     title = {Smoothness and approximation properties for solutions of a class of nonlinear equations of {Schr\"odinger} type},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {44--48},
     publisher = {mathdoc},
     number = {3},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1989_3_a7/}
}