@article{10_37236_8478,
     author = {Cl\'ement Charpentier and Reza Naserasr and \'Eric Sopena},
     title = {Homomorphisms of sparse signed graphs},
     journal = {The electronic journal of combinatorics},
     year = {2020},
     volume = {27},
     number = {3},
     doi = {10.37236/8478},
     zbl = {1508.05073},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/8478/}
}