@article{1102905843, author = {Johnson, B. E. and Williams, J. P.}, title = {The range of a normal derivation.}, journal = {Pacific J. Math.}, volume = {61}, number = {2}, year = {1975}, pages = { 105-122}, language = {en}, url = {http://dml.mathdoc.fr/item/1102905843} }
Johnson, B. E.; Williams, J. P. The range of a normal derivation.. Pacific J. Math., Tome 61 (1975) no. 2, pp. 105-122. http://gdmltest.u-ga.fr/item/1102905843/