@article{10_4153_CJM_1970_062_2, author = {Akcoglu, M. A. and Chacon, R. V.}, title = {A {Local} {Ratio} {Theorem}}, journal = {Canadian journal of mathematics}, pages = {545--552}, year = {1970}, volume = {22}, number = {3}, doi = {10.4153/CJM-1970-062-2}, url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-062-2/} }