@article{10_4064_ap_57_2_105_120,
     author = {W{\l}odzimierz Mikulski},
     title = {Continuity of projections of natural bundles},
     journal = {Annales Polonici Mathematici},
     pages = {105--120},
     publisher = {mathdoc},
     volume = {57},
     number = {2},
     year = {1992},
     doi = {10.4064/ap-57-2-105-120},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-57-2-105-120/}
}