@article{1195523381, author = {Chikawa, Kazuo and Is\'eki, Kiyoshi}, title = {Unsolved problems of number theory. Steinhaus problem}, journal = {Proc. Japan Acad.}, volume = {38}, number = {10}, year = {1962}, language = {en}, url = {http://dml.mathdoc.fr/item/1195523381} }
Chikawa, Kazuo; Iséki, Kiyoshi. Unsolved problems of number theory. Steinhaus problem. Proc. Japan Acad., Tome 38 (1962) no. 10, . http://gdmltest.u-ga.fr/item/1195523381/