@article{CMH_1977__52_139684,
     author = {K.S. Brown and P.J. Kahn},
     title = {Homotopy dimension and simple cohomological dimension of spaces.},
     journal = {Commentarii mathematici Helvetici},
     pages = {111--128},
     publisher = {mathdoc},
     volume = {52},
     year = {1977},
     zbl = {0351.55009},
     url = {http://geodesic.mathdoc.fr/item/CMH_1977__52_139684/}
}