%0 Journal Article %A A. P. Norden %A N. Kh. Kharisova %T Moment space in the geometry of pairs of ruled surfaces of a~four-dimensional Euclidean space %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1988 %P 33-35 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1988_11_a5/ %G ru %F IVM_1988_11_a5