@article{JAC_2010__31_1_a2,
     author = {Smith, Simon M.},
     title = {Infinite primitive directed graphs},
     journal = {Journal of Algebraic Combinatorics},
     pages = {131--141},
     publisher = {mathdoc},
     volume = {31},
     number = {1},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2010__31_1_a2/}
}