@article{10_4153_CJM_1969_053_8,
     author = {Hoo, C S.},
     title = {Homotopical {Nilpotency} of {Loop-Spaces}},
     journal = {Canadian journal of mathematics},
     pages = {479--484},
     year = {1969},
     volume = {21},
     number = {1},
     doi = {10.4153/CJM-1969-053-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-053-8/}
}