%0 Journal Article %A Higgs, Denis %T Equicardinality of Bases in B-Matroids %J Canadian mathematical bulletin %D 1969 %P 861-862 %V 12 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-112-6/ %R 10.4153/CMB-1969-112-6 %F 10_4153_CMB_1969_112_6