@article{IM_1972__16_142152,
     author = {G. Mislin and Peter Hilton and J. Roitberg},
     title = {H-Spaces of {Rank} {Two} and {Non-Concellation} {Phenomena.}},
     journal = {Inventiones mathematicae},
     pages = {325--334},
     publisher = {mathdoc},
     volume = {16},
     year = {1972},
     zbl = {0244.55010},
     url = {http://geodesic.mathdoc.fr/item/IM_1972__16_142152/}
}