@article{10_37236_10754,
     author = {Florent  Foucaud and Reza Naserasr and Rongxing  Xu},
     title = {Extended double covers and homomorphism bounds of signed graphs},
     journal = {The electronic journal of combinatorics},
     year = {2023},
     volume = {30},
     number = {3},
     doi = {10.37236/10754},
     zbl = {1533.05107},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/10754/}
}