@article{CMUC_2003__44_4_a12,
     author = {Mikulski, W. M.},
     title = {Non-existence of some canonical constructions on connections},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {691--695},
     publisher = {mathdoc},
     volume = {44},
     number = {4},
     year = {2003},
     mrnumber = {2062885},
     zbl = {1099.58004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2003__44_4_a12/}
}