@article{ZNSL_1972_30_a13,
     author = {V. \`E. Katsnelson},
     title = {A~remark on canonical factorization in certain spaces of analytic functions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {163--164},
     year = {1972},
     volume = {30},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1972_30_a13/}
}