title = {External and internal elements of a matroid basis.},
author = {Gwihen Etienne and Michel Las Vergnas}, journal = {Discrete Mathematics}, number = {1-3}, pages = {111-119}, url = {http://dblp.uni-trier.de/db/journals/dm/dm179.html#EtienneV98}, volume = {179}, year = {1998}, description = {dblp}, ee = {http://dx.doi.org/10.1016/S0012-365X(95)00332-Q}, date = {2007-06-25},
keywords = {dblp }
::