@article{DE_1979_15_11_a8,
     author = {Yu. A. Ryabov},
     title = {Estimates of the radius of convergence for expansions in powers of the parameter and algorithms for construction of {Mathieu} functions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1993--2003},
     publisher = {mathdoc},
     volume = {15},
     number = {11},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_11_a8/}
}