%0 Journal Article %A FERRANDO, J. C. %T bvca(Σ, X) REVISITED %J Glasgow mathematical journal %D 2011 %P 341-346 %V 53 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089510000753/ %R 10.1017/S0017089510000753 %F 10_1017_S0017089510000753