%0 Journal Article %A Yu. Ch. Kokayev %T On $GB$ and $GC$-properties of generalised ellipsoids %J Zapiski Nauchnykh Seminarov POMI %D 1983 %P 104-108 %V 130 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1983_130_a9/ %G ru %F ZNSL_1983_130_a9