@article{DAN_1985_282_4_a11,
     author = {\`E. A. Blyas},
     title = {Loops of one-dimensional cross sections of time fields of},
     journal = {Doklady Akademii Nauk},
     pages = {824--827},
     publisher = {mathdoc},
     volume = {282},
     number = {4},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_282_4_a11/}
}