@inproceedings{ DEL_Vitale-_METERE-,

author = { AURORA INÉS DEL RÍO CABEZA and Enrico Vitale- and GUISSEPPE METERE- } ,

title = { PULLBACK OF N-GROUPOIDS },

booktitle = { SEMINARIO FEDERICO ENRIQUES () (.2006.MILAN, ITALIA) },

year = { 2006 },

pages = { None - None },

location = { MILAN, ITALIA },

}