@article{1183532402, author = {Wu, Y.-C.}, title = {A short proof of a theorem of Barr-Beck}, journal = {Bull. Amer. Math. Soc.}, volume = {76}, number = {4}, year = {1970}, pages = { 1275-1276}, language = {en}, url = {http://dml.mathdoc.fr/item/1183532402} }
Wu, Y.-C. A short proof of a theorem of Barr-Beck. Bull. Amer. Math. Soc., Tome 76 (1970) no. 4, pp. 1275-1276. http://gdmltest.u-ga.fr/item/1183532402/