@article{TIMM_2001_7_1_a7,
     author = {L. A. Kalyakin},
     title = {Weak perturbations of solutions with movable singularities},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {85--104},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2001_7_1_a7/}
}