N. Alon and T. H. Marshall, Homomorphisms of edge-colored graphs and Coxeter groups, Journal of Algebraic Combinatorics, vol.8, issue.1, pp.5-13, 1998.
DOI : 10.1023/A:1008647514949

J. Bensmail, R. Duvignau, and S. Kirgizov, The complexity of deciding whether a graph admits an orientation with fixed weak diameter, 2013.
URL : https://hal.archives-ouvertes.fr/hal-01418678

O. V. Borodin, On acyclic colorings of planar graphs, Discrete Mathematics, vol.25, issue.3, pp.211-236, 1979.
DOI : 10.1016/0012-365X(79)90077-3
URL : https://doi.org/10.1016/0012-365x(79)90077-3

W. Goddard and M. A. Henning, Domination in planar graphs with small diameter, Journal of Graph Theory, vol.25, issue.1, pp.1-25, 2002.
DOI : 10.1002/(SICI)1097-0118(199706)25:2<139::AID-JGT6>3.0.CO;2-N
URL : http://cs.clemson.edu/~goddard/papers/graphs/planarDom.pdf

W. F. Klostermeyer and G. Macgillivray, Analogs of cliques for oriented coloring, Discussiones Mathematicae Graph Theory, pp.373-388, 2004.

W. F. Klostermeyer and G. Macgillivray, Homomorphisms and oriented colorings of equivalence classes of oriented graphs, Discrete Mathematics, vol.274, issue.1-3, pp.1-3161, 2004.
DOI : 10.1016/S0012-365X(03)00086-4

L. Lovász, Coverings and coloring of hypergraphs, Proceedings of the Fourth South-eastern Conference on Combinatorics, Graph Theory, and Computing, p.312, 1973.

A. Montejano, P. Ochem, A. Pinlou, A. Raspaud, and . Sopena, Homomorphisms of 2-edge-colored graphs, Discrete Applied Mathematics, vol.158, issue.12, pp.1365-1379, 2010.
DOI : 10.1016/j.dam.2009.09.017
URL : https://hal.archives-ouvertes.fr/lirmm-00433039

A. Nandy, S. Sen, and . Sopena, Outerplanar and planar oriented cliques (accepted) Journal of Graph Theory, 2015.
DOI : 10.1002/jgt.21893
URL : http://arxiv.org/pdf/1411.7192

R. Naserasr, E. Rollová, and . Sopena, Homomorphisms of signed graphs. (preprint), 2013.
DOI : 10.1002/jgt.21817
URL : https://hal.archives-ouvertes.fr/hal-00991796

J. Ne?et?il and A. Raspaud, Colored Homomorphisms of Colored Mixed Graphs, Journal of Combinatorial Theory, Series B, vol.80, issue.1, pp.147-155, 2000.
DOI : 10.1006/jctb.2000.1977

A. Sopena, Good and semi-strong colorings of oriented planar graphs, Information Processing Letters, vol.51, issue.4, pp.171-174, 1994.

S. Sen, A contribution to the theory of graph homomorphisms and colorings, 2014.
URL : https://hal.archives-ouvertes.fr/tel-00960893

E. Sopena, Homomorphisms and colourings of oriented graphs: An updated survey, Discrete Mathematics, vol.339, issue.7, 2015.
DOI : 10.1016/j.disc.2015.03.018
URL : https://hal.archives-ouvertes.fr/hal-01330535