@article{bwmeta1.element.bwnjournal-article-fmv95i1p13bwm, author = {Micha\l\ Jaegermann}, title = {Normal radicals}, journal = {Fundamenta Mathematicae}, volume = {96}, year = {1977}, pages = {147-155}, zbl = {0354.16002}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv95i1p13bwm} }
Jaegermann, Michał. Normal radicals. Fundamenta Mathematicae, Tome 96 (1977) pp. 147-155. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv95i1p13bwm/