@article{10_37236_9295,
     author = {Pawel Wocjan and Clive  Elphick and Parisa Darbari},
     title = {Spectral lower bounds for the quantum chromatic number of a graph. {II}},
     journal = {The electronic journal of combinatorics},
     year = {2020},
     volume = {27},
     number = {4},
     doi = {10.37236/9295},
     zbl = {1454.05041},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/9295/}
}