@article{1195524352, author = {Matsushima, Yatar\=o}, title = {On extreme elements in lattices}, journal = {Proc. Japan Acad.}, volume = {35}, number = {10}, year = {1959}, pages = { 226-231}, language = {en}, url = {http://dml.mathdoc.fr/item/1195524352} }
Matsushima, Yatarō. On extreme elements in lattices. Proc. Japan Acad., Tome 35 (1959) no. 10, pp. 226-231. http://gdmltest.u-ga.fr/item/1195524352/