@article{JMAG_2006_2_1_a2,
     author = {O. A. Goncharova},
     title = {Ruled surfaces in~$E^n$},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {40--61},
     year = {2006},
     volume = {2},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/JMAG_2006_2_1_a2/}
}