@article{EXMATH_1992_1992_1_a31,
     author = {Nauman, Syed Khalid},
     title = {M\'odulos parcialmente planos y proyectivos.},
     journal = {Extracta mathematicae},
     pages = {38-41},
     year = {1992},
     volume = {7},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1992_1992_1_a31/}
}