@article{KUTGS_1988_18_a1,
     author = {L. V. Antonova},
     title = {Real surfaces of equal slope in a dual {Euclidean} space},
     journal = {Trudy Geometricheskogo Seminara},
     pages = {6--17},
     publisher = {mathdoc},
     volume = {18},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUTGS_1988_18_a1/}
}