@article{10_4064_cm_31_2_211_217,
     author = {T. Jakubowski},
     title = {On the form of principal torus-bundles over toruses},
     journal = {Colloquium Mathematicum},
     pages = {211--217},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {1974},
     doi = {10.4064/cm-31-2-211-217},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-31-2-211-217/}
}