@article{DAN_1963_149_6_a0,
     author = {M. A. Akivis},
     title = {On the structure of higher-dimensional surfaces carrying a net of lines of curvature},
     journal = {Doklady Akademii Nauk},
     pages = {1247--1249},
     publisher = {mathdoc},
     volume = {149},
     number = {6},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_149_6_a0/}
}