@article{RSMUP_2006__115__137_0,
     author = {Robinson, Derek J. S.},
     title = {On inert subgroups of a group},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {137--159},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {115},
     year = {2006},
     mrnumber = {2245592},
     zbl = {1167.20319},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_2006__115__137_0/}
}