@article{RM_1960_15_1_a31,
     author = {A. G. Sigalov},
     title = {Amendment to the article {{\textquotedblleft}Variational} problems with permissible surfaces of arbitrary topological types{\textquotedblright}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1960},
     volume = {15},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1960_15_1_a31/}
}