@article{RSMUP_1965__35_2_267_0,
     author = {Boero, Paolo},
     title = {Categorie omologiche},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {267--298},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {35},
     number = {2},
     year = {1965},
     mrnumber = {194489},
     zbl = {0259.18009},
     language = {it},
     url = {http://archive.numdam.org/item/RSMUP_1965__35_2_267_0/}
}