@article{MOMA_1988__106_1_178399,
     author = {R. Doman},
     title = {On {Injective} {Rational} {Coefficient} {Systems.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {171--178},
     publisher = {mathdoc},
     volume = {106},
     number = {1},
     year = {1988},
     zbl = {0669.18008},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1988__106_1_178399/}
}