@article{ELA_2009__18__a42,
     author = {Van Der Holst, Hein},
     title = {On the maximum positive semi-definite nullity and the cycle matroid of graphs},
     journal = {The electronic journal of linear algebra},
     pages = {192--201},
     publisher = {mathdoc},
     volume = {18},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2009__18__a42/}
}