@article{DAN_1976_231_1_a1,
     author = {E. G. Belaga},
     title = {On {Heawood} vectors of pseudotriangulations},
     journal = {Doklady Akademii Nauk},
     pages = {14--17},
     publisher = {mathdoc},
     volume = {231},
     number = {1},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_231_1_a1/}
}