@article{10_2298_FIL2219481F,
     author = {Jasmina Ferme},
     title = {A characterization of 4-\ensuremath{\chi} \ensuremath{\rho} -(vertex-)critical graphs},
     journal = {Filomat},
     pages = {6481 },
     year = {2022},
     volume = {36},
     number = {19},
     doi = {10.2298/FIL2219481F},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL2219481F/}
}