@article{GDZPPN002177013, title = {Hasse factor systems reduced mod ... .}, journal = {Journal f\"ur die reine und angewandte Mathematik}, volume = {193}, year = {1954}, pages = {161-165}, zbl = {0058.02902}, url = {http://dml.mathdoc.fr/item/GDZPPN002177013} }
Masuda, K. Hasse factor systems reduced mod ... .. Journal für die reine und angewandte Mathematik, Tome 193 (1954) pp. 161-165. http://gdmltest.u-ga.fr/item/GDZPPN002177013/