@article{ELA_2010__20__a7,
     author = {Mitchell, Lon H. and Narayan, Sivaram K. and Rogers, Ian},
     title = {On the minimum vector rank of multigraphs},
     journal = {The electronic journal of linear algebra},
     pages = {661--672},
     publisher = {mathdoc},
     volume = {20},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2010__20__a7/}
}