@article{DMGT_2016_36_3_a7,
     author = {Saito, Akira and Xiong, Liming},
     title = {The {Ryj\'a\v{c}ek} {Closure} and a {Forbidden} {Subgraph}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {621--628},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2016_36_3_a7/}
}