@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/}
}