@article{TMF_1992_93_2_a9,
     author = {L. A. Takhtadzhyan},
     title = {A~simple example of modular forms as tau-functions for integrable equations},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {330--341},
     publisher = {mathdoc},
     volume = {93},
     number = {2},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1992_93_2_a9/}
}