@article{1256059468, author = {Held, Dieter}, title = {Closure properties and partial Engel conditions in groups}, journal = {Illinois J. Math.}, volume = {8}, number = {4}, year = {1964}, pages = { 705-712}, language = {en}, url = {http://dml.mathdoc.fr/item/1256059468} }
Held, Dieter. Closure properties and partial Engel conditions in groups. Illinois J. Math., Tome 8 (1964) no. 4, pp. 705-712. http://gdmltest.u-ga.fr/item/1256059468/