@article{GDZPPN002392925, title = {Wreath products and extensions.}, journal = {Mathematische Zeitschrift}, volume = {82}, year = {1963}, pages = {286-299}, zbl = {0123.02202}, url = {http://dml.mathdoc.fr/item/GDZPPN002392925} }
Baumslag, Gilbert. Wreath products and extensions.. Mathematische Zeitschrift, Tome 82 (1963) pp. 286-299. http://gdmltest.u-ga.fr/item/GDZPPN002392925/