@article{10_4153_CJM_1972_014_6,
     author = {Cherenack, Paul},
     title = {Basic {Objects} for an {Algebraic} {Homotopy} {Theory}},
     journal = {Canadian journal of mathematics},
     pages = {155--166},
     year = {1972},
     volume = {24},
     number = {1},
     doi = {10.4153/CJM-1972-014-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1972-014-6/}
}