@article{GDZPPN002308851, title = {Functorial Subgroups Commuting with Inverse Limits.}, journal = {Mathematische Annalen}, volume = {201}, year = {1973}, pages = {177-186}, zbl = {0242.13009}, url = {http://dml.mathdoc.fr/item/GDZPPN002308851} }
Hsü, Chin-Shui. Functorial Subgroups Commuting with Inverse Limits.. Mathematische Annalen, Tome 201 (1973) pp. 177-186. http://gdmltest.u-ga.fr/item/GDZPPN002308851/