@article{FAA_1967_1_3_a10,
     author = {V. P. Gurarii},
     title = {Spectrum of functions on a semi-axis},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {88--89},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1967_1_3_a10/}
}