@article{1183509412, author = {Baer, Reinhold}, title = {Absolute retracts in group theory}, journal = {Bull. Amer. Math. Soc.}, volume = {52}, number = {12}, year = {1946}, pages = { 501-506}, language = {en}, url = {http://dml.mathdoc.fr/item/1183509412} }
Baer, Reinhold. Absolute retracts in group theory. Bull. Amer. Math. Soc., Tome 52 (1946) no. 12, pp. 501-506. http://gdmltest.u-ga.fr/item/1183509412/