@article{1195518788, author = {Kuroki, Nobuaki}, title = {Note on pure subsystems}, journal = {Proc. Japan Acad.}, volume = {50}, number = {1}, year = {1974}, pages = { 683-687}, language = {en}, url = {http://dml.mathdoc.fr/item/1195518788} }
Kuroki, Nobuaki. Note on pure subsystems. Proc. Japan Acad., Tome 50 (1974) no. 1, pp. 683-687. http://gdmltest.u-ga.fr/item/1195518788/