@article{TRSPY_1978_148_a20,
     author = {S. S. Ryshkov},
     title = {Multidimensional sails},
     journal = {Informatics and Automation},
     pages = {211--217},
     publisher = {mathdoc},
     volume = {148},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1978_148_a20/}
}