@article{RO_2021__55_4_2385_0,
     author = {Sahbi, Rafik},
     title = {Solutions to four open problems on quorum colorings of graphs},
     journal = {RAIRO. Operations Research},
     pages = {2385--2394},
     year = {2021},
     publisher = {EDP-Sciences},
     volume = {55},
     number = {4},
     doi = {10.1051/ro/2021116},
     mrnumber = {4297818},
     zbl = {1476.05060},
     language = {en},
     url = {https://www.numdam.org/articles/10.1051/ro/2021116/}
}