@article{10_4171_ggd_238,
     author = {Colin D. Reid},
     title = {Endomorphisms of profinite groups},
     journal = {Groups, geometry, and dynamics},
     pages = {553--564},
     year = {2014},
     volume = {8},
     number = {2},
     doi = {10.4171/ggd/238},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/238/}
}