@misc{Petrosyan_Petros_On,
 author={Petrosyan, Petros and Ani S. Shashikyan},
 howpublished={online},
 publisher={Изд-во НАН РА},
 title={On interval total colorings of doubly convex bipartite graphs},
 type={Հոդված},
 keywords={Mathematics, Graph theory},
}