@article{DAN_1961_138_4_a13,
     author = {G. S. Khovanskii},
     title = {Representation of the equation $f_1+f_2+f_3+f_4+f_5+f_6=0$ by a nomogram with an oriented transparent ruler},
     journal = {Doklady Akademii Nauk},
     pages = {793--795},
     publisher = {mathdoc},
     volume = {138},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_4_a13/}
}