The following publications are possibly variants of this publication:
- Homomorphisms of planar signed graphs to signed projective cubesReza Naserasr, Edita Rollová, Eric Sopena. dmtcs, 15(3):1-12, 2013. [doi]
- Homomorphisms and edge-colourings of planar graphsReza Naserasr. JCT, 97(3):394-400, 2007. [doi]
- Extended Double Covers and Homomorphism Bounds of Signed GraphsFlorent Foucaud, Reza Naserasr, Rongxing Xu. combinatorics, 30(3), 2023. [doi]