@article{CTGDC_1976__17_2_203_0,
     author = {Cherenack, Paul},
     title = {Some invariant theory among quasi-projectives},
     journal = {Cahiers de topologie et g\'eom\'etrie diff\'erentielle},
     pages = {203--220},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {17},
     number = {2},
     year = {1976},
     mrnumber = {498576},
     zbl = {0337.14005},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1976__17_2_203_0/}
}