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@article{JRAM_1950__187_150157, author = {Franz Wever}, title = {Operatoren in {Lieschen} {Ringen.}}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {44--55}, publisher = {mathdoc}, volume = {187}, year = {1950}, zbl = {0036.29901}, url = {http://geodesic.mathdoc.fr/item/JRAM_1950__187_150157/} }
Franz Wever. Operatoren in Lieschen Ringen.. Journal für die reine und angewandte Mathematik, Tome 187 (1950), pp. 44-55. http://geodesic.mathdoc.fr/item/JRAM_1950__187_150157/