@article{10_14708_cm_v21i1_5957,
     author = {J. Ahsan},
     title = {Semi-local rings and quasi-projective modules},
     journal = {Commentationes Mathematicae},
     pages = { 5--7},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1980},
     doi = {10.14708/cm.v21i1.5957},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v21i1.5957/}
}