@article{10_37236_289,
     author = {Hossein Hajiabolhassan and Ali Taherkhani},
     title = {Graph powers and graph homomorphisms},
     journal = {The electronic journal of combinatorics},
     year = {2010},
     volume = {17},
     doi = {10.37236/289},
     zbl = {1215.05065},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/289/}
}