@article{CTGDC_1977__18_2_139_0,
     author = {Porter, Timothy},
     title = {Coherent prohomotopical algebra},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {139--179},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {18},
     number = {2},
     year = {1977},
     mrnumber = {470033},
     zbl = {0364.18009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CTGDC_1977__18_2_139_0/}
}