@article{DAN_1960_131_3_a1,
     author = {K. M. Belov},
     title = {Some remarks on the rigidity of surfaces of positive curvature with an edge},
     journal = {Doklady Akademii Nauk},
     pages = {475--477},
     publisher = {mathdoc},
     volume = {131},
     number = {3},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_3_a1/}
}