@article{FAA_1976_10_3_a0,
     author = {M. S. Agranovich},
     title = {Summability of series in root vectors of non-self-adjoint elliptic operators},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {1--12},
     publisher = {mathdoc},
     volume = {10},
     number = {3},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1976_10_3_a0/}
}