@article{ZNSL_1983_130_a9,
     author = {Yu. Ch. Kokayev},
     title = {On $GB$ and $GC$-properties of generalised ellipsoids},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {104--108},
     publisher = {mathdoc},
     volume = {130},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1983_130_a9/}
}