@article{TM_2019_305_a2,
     author = {E. Yu. Bunkova},
     title = {Universal {Formal} {Group} for {Elliptic} {Genus} of {Level~}$N$},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {40--60},
     publisher = {mathdoc},
     volume = {305},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2019_305_a2/}
}