@article{MMO_1984_47_a1,
     author = {M. S. Agranovich},
     title = {Elliptic pseudodifferential operators on a~closed curve},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {22--67},
     publisher = {mathdoc},
     volume = {47},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1984_47_a1/}
}