@article{10_4064_cm100_2_4,
     author = {Patrik Lundstr\"om},
     title = {The category of groupoid graded modules},
     journal = {Colloquium Mathematicum},
     pages = {195--211},
     publisher = {mathdoc},
     volume = {100},
     number = {2},
     year = {2004},
     doi = {10.4064/cm100-2-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm100-2-4/}
}