@article{DAN_1960_133_2_a1,
     author = {S. V. Bakhvalov},
     title = {Some geometric properties of nomographic equations},
     journal = {Doklady Akademii Nauk},
     pages = {258--260},
     publisher = {mathdoc},
     volume = {133},
     number = {2},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_133_2_a1/}
}