@article{MZM_1974_15_1_a5,
     author = {V. S. Vladimirov and Yu. N. Drozhzhinov},
     title = {Holonomic functions in a~polycircle with nonnegative imaginary part},
     journal = {Matemati\v{c}eskie zametki},
     pages = {55--61},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_15_1_a5/}
}