@article{DAN_1961_138_5_a10,
     author = {D. B. Potyagailo},
     title = {The type of a conformal sewing of a strip},
     journal = {Doklady Akademii Nauk},
     pages = {1025--1028},
     year = {1961},
     volume = {138},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_5_a10/}
}