@article{02125654, title = {On von Neumann varieties.}, journal = {Theory and Applications of Categories [electronic only]}, volume = {12}, year = {2004}, pages = {5-26}, zbl = {1057.18004}, language = {en}, url = {http://dml.mathdoc.fr/item/02125654} }
Borceux, F.; Rosický, J. On von Neumann varieties.. Theory and Applications of Categories [electronic only], Tome 12 (2004) pp. 5-26. http://gdmltest.u-ga.fr/item/02125654/