@article{TAC_1995_1_a2,
     author = {Ronald Brown and Christopher D. Wensley},
     title = {On finite induced crossed modules and the homotopy 2-type of mapping cones,},
     journal = {Theory and applications of categories},
     pages = {54--71},
     publisher = {mathdoc},
     volume = {1},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_1995_1_a2/}
}