@article{NSJOM_2012_42_1a_7,
     author = {Andreja Ili\'c, and Dragan Ma\v{s}ulovi\'c, and Uro\v{s} Rajkovi\'c},
     title = {Homomorphism-homogeneous graphs with loops},
     journal = {Novi Sad Journal of Mathematics},
     pages = {59-66},
     publisher = {mathdoc},
     volume = {42},
     number = {1},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2012_42_1a_7/}
}