@article{10_4064_cm_40_2_197_202,
     author = {Miros{\l}aw Uscki},
     title = {On exact modules over a commutative exact ring},
     journal = {Colloquium Mathematicum},
     pages = {197--202},
     publisher = {mathdoc},
     volume = {40},
     number = {2},
     year = {1978},
     doi = {10.4064/cm-40-2-197-202},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-40-2-197-202/}
}