@article{FAA_1981_15_3_a6,
     author = {M. S. Agranovich and B. A. Amosov},
     title = {Elliptic pseudodifferential matrix operators on a closed curve},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {79--81},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1981_15_3_a6/}
}