@article{UZERU_2002_1_a1,
     author = {G. H. Sahakyan},
     title = {On completness of eigenvectors for {Dirac} two parameter boundary problem},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {9--14},
     publisher = {mathdoc},
     number = {1},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2002_1_a1/}
}