@article{FAA_1987_21_4_a3,
     author = {I. M. Krichever and S. P. Novikov},
     title = {Virasoro-type algebras, {Riemann} surfaces and strings in {Minkowsky} space},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {47--61},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1987_21_4_a3/}
}