@article{10_1007_s10587_016_0299_1,
     author = {Fang, Wei and Gao, Wei and Gao, Yubin and Gong, Fei and Jing, Guangming and Li, Zhongshan and Shao, Yanling and Zhang, Lihua},
     title = {Rational realization of the minimum ranks of nonnegative sign pattern matrices},
     journal = {Czechoslovak Mathematical Journal},
     pages = {895--911},
     publisher = {mathdoc},
     volume = {66},
     number = {3},
     year = {2016},
     doi = {10.1007/s10587-016-0299-1},
     mrnumber = {3556874},
     zbl = {06644040},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.1007/s10587-016-0299-1/}
}