@article{10_21136_CMJ_2018_0122_16,
     author = {Yue, Jun and Wei, Meiqin and Zhao, Yan},
     title = {Proper connection number of bipartite graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {307--322},
     publisher = {mathdoc},
     volume = {68},
     number = {2},
     year = {2018},
     doi = {10.21136/CMJ.2018.0122-16},
     mrnumber = {3819176},
     zbl = {06890375},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2018.0122-16/}
}