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@article{TRSPY_1991_196_a1, author = {M. M. Anzin}, title = {On variations of positive quadratic forms (with applications to the study of perfect forms)}, journal = {Informatics and Automation}, pages = {11--26}, publisher = {mathdoc}, volume = {196}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1991_196_a1/} }
M. M. Anzin. On variations of positive quadratic forms (with applications to the study of perfect forms). Informatics and Automation, Discrete geometry and topology, Tome 196 (1991), pp. 11-26. http://geodesic.mathdoc.fr/item/TRSPY_1991_196_a1/