@article{10_4153_CMB_1966_081_8, author = {Pears, A. R.}, title = {On the {Exactness} of the {Eckmann-Hilton} {Homotopy} {Sequence}}, journal = {Canadian mathematical bulletin}, pages = {671--673}, year = {1966}, volume = {9}, number = {5}, doi = {10.4153/CMB-1966-081-8}, url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1966-081-8/} }