@article{CTGDC_2010__51_3_205_0,
     author = {Cheng, Eugenia and Makkai, Michael},
     title = {A note on the penon definition of n-category},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     eid = {3},
     pages = {205--223},
     publisher = {Andr\'ee CHARLES EHRESMANN},
     volume = {51},
     number = {3},
     year = {2010},
     mrnumber = {2731718},
     zbl = {1235.18005},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_2010__51_3_205_0/}
}