@article{SJIM_1998_1_2_a4,
     author = {I. V. Bakhmutova and V. D. Gusev and V. N. Titkova},
     title = {$L${-Gramme} alphabets for decoding of ``znamenny pesnopenia''},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {51--66},
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_1998_1_2_a4/}
}