@article{MZM_1982_31_6_a12,
     author = {N. G. Perlova and V. T. Fomenko},
     title = {Class of correct exterior connections in the theory of deformations of surfaces},
     journal = {Matemati\v{c}eskie zametki},
     pages = {937--945},
     publisher = {mathdoc},
     volume = {31},
     number = {6},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1982_31_6_a12/}
}