@article{SEMR_2009_6_a31,
     author = {A. E. Mironov},
     title = {On commuting differential operators of rank~$2$},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {533--536},
     publisher = {mathdoc},
     volume = {6},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2009_6_a31/}
}