@article{FAA_2016_50_3_a1,
     author = {V. M. Buchstaber and S. I. Tertychnyi},
     title = {Automorphisms of the solution spaces of special double-confluent {Heun} equations},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {12--33},
     publisher = {mathdoc},
     volume = {50},
     number = {3},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2016_50_3_a1/}
}