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@article{MOMA_1980__90_177980, author = {Mohammad R.R. Moghaddam}, title = {The {Baer-Invariant} and the {Direct} {Limit.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {37--44}, publisher = {mathdoc}, volume = {90}, year = {1980}, zbl = {0434.20016}, url = {http://geodesic.mathdoc.fr/item/MOMA_1980__90_177980/} }
Mohammad R.R. Moghaddam. The Baer-Invariant and the Direct Limit.. Monatshefte für Mathematik, Tome 90 (1980), pp. 37-44. http://geodesic.mathdoc.fr/item/MOMA_1980__90_177980/