@article{UZERU_2009_2_a5,
     author = {N. G. Aharonyan},
     title = {Pleijel type identities},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {32--37},
     publisher = {mathdoc},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2009_2_a5/}
}