@article{10_4064_cm127_1_5,
     author = {Derya Keskin T\"ut\"unc\"u and Berke Kalebo\u{g}az and Patrick F. Smith},
     title = {Direct sums of semi-projective modules},
     journal = {Colloquium Mathematicum},
     pages = {67--81},
     publisher = {mathdoc},
     volume = {127},
     number = {1},
     year = {2012},
     doi = {10.4064/cm127-1-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm127-1-5/}
}