@article{10_37236_3092,
     author = {Chen Xie and Hui Zhao and Zhixi Wang},
     title = {Separability of density matrices of graphs for multipartite systems},
     journal = {The electronic journal of combinatorics},
     year = {2013},
     volume = {20},
     number = {4},
     doi = {10.37236/3092},
     zbl = {1295.05246},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/3092/}
}