@article{DMGT_2019_39_2_a17,
     author = {Li, Ruijuan and Sheng, Bin},
     title = {The {Second} {Neighbourhood} for {Bipartite} {Tournaments}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {555--565},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2019_39_2_a17/}
}