no. 2
A note on the pennon definition of n-category
Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 50 (2009) no. 2, article no. 1, 19 p. 
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     title = {A note on the pennon definition of n-category},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     eid = {1},
     pages = {83--101},
     year = {2009},
     publisher = {Andr\'ee CHARLES EHRESMANN},
     volume = {50},
     number = {2},
     mrnumber = {2535162},
     zbl = {1209.18006},
     language = {en},
     url = {https://www.numdam.org/item/CTGDC_2009__50_2_83_0/}
}
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Cheng, Eugenia; Makkai, Michael. A note on the pennon definition of n-category. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 50 (2009) no. 2, article  no. 1, 19 p.. https://www.numdam.org/item/CTGDC_2009__50_2_83_0/

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