Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1990_47_1_a0, author = {S. Kh. Aranson}, title = {The problem of gray boxes}, journal = {Matemati\v{c}eskie zametki}, pages = {3--14}, publisher = {mathdoc}, volume = {47}, number = {1}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_1_a0/} }
S. Kh. Aranson. The problem of gray boxes. Matematičeskie zametki, Tome 47 (1990) no. 1, pp. 3-14. http://geodesic.mathdoc.fr/item/MZM_1990_47_1_a0/