@article{1270216496,
author = {GOTO, Shiro and WATANABE, Keiichi},
title = {On Graded Rings, II ($\mathbf{Z}^n$-graded rings)},
journal = {Tokyo J. of Math.},
volume = {01},
number = {2},
year = {1978},
pages = { 237-261},
language = {en},
url = {http://dml.mathdoc.fr/item/1270216496}
}
GOTO, Shiro; WATANABE, Keiichi. On Graded Rings, II ($\mathbf{Z}^n$-graded rings). Tokyo J. of Math., Tome 01 (1978) no. 2, pp. 237-261. http://gdmltest.u-ga.fr/item/1270216496/