@article{10_1017_fms_2020_25, author = {MAIKE GRUCHOT and ALASTAIR LITTERICK and GERHARD R\"OHRLE}, title = {RELATIVE {COMPLETE} {REDUCIBILITY} {AND} {NORMALIZED} {SUBGROUPS}}, journal = {Forum of Mathematics, Sigma}, publisher = {mathdoc}, volume = {8}, year = {2020}, doi = {10.1017/fms.2020.25}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.1017/fms.2020.25/} }