@article{02028926,
title = {The category of opetopes and the category of opetopic sets.},
journal = {Theory and Applications of Categories [electronic only]},
volume = {11},
year = {2003},
pages = {353-374},
zbl = {1036.18004},
language = {en},
url = {http://dml.mathdoc.fr/item/02028926}
}
Cheng, Eugenia. The category of opetopes and the category of opetopic sets.. Theory and Applications of Categories [electronic only], Tome 11 (2003) pp. 353-374. http://gdmltest.u-ga.fr/item/02028926/