@article{ZNSL_2017_462_a4,
     author = {S. Yu. Slavyanov and A. A. Salatich},
     title = {Confluent {Heun} equation and confluent hypergeometric equation},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {93--102},
     publisher = {mathdoc},
     volume = {462},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2017_462_a4/}
}