Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1980_152_a0, author = {S. S. Ryshkov}, title = {Editor's preface}, journal = {Informatics and Automation}, pages = {3--4}, publisher = {mathdoc}, volume = {152}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1980_152_a0/} }
S. S. Ryshkov. Editor's preface. Informatics and Automation, Geometry of positive quadratic forms, Tome 152 (1980), pp. 3-4. http://geodesic.mathdoc.fr/item/TRSPY_1980_152_a0/