@article{CTGDC_1971__12_2_137_0,
     author = {Kolar, Ivan},
     title = {Higher order torsions of spaces with {Cartan} connection},
     journal = {Cahiers de topologie et g\'eom\'etrie diff\'erentielle},
     pages = {137--146},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {12},
     number = {2},
     year = {1971},
     mrnumber = {315619},
     zbl = {0221.53039},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1971__12_2_137_0/}
}