@article{GDZPPN002301911, title = {Pure Theories.}, journal = {Mathematische Annalen}, volume = {189}, year = {1970}, pages = {1-18}, url = {http://dml.mathdoc.fr/item/GDZPPN002301911} }
FIELDHOUSE, D.J. Pure Theories.. Mathematische Annalen, Tome 189 (1970) pp. 1-18. http://gdmltest.u-ga.fr/item/GDZPPN002301911/