@article{10_4153_CJM_1968_127_7,
     author = {Priddis, M. J. M.},
     title = {An {Inequality} {Between} {Numerical} {Homotopy} {Invariants}},
     journal = {Canadian journal of mathematics},
     pages = {1295--1299},
     year = {1968},
     volume = {20},
     number = {1},
     doi = {10.4153/CJM-1968-127-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-127-7/}
}