@article{ZNSL_2000_270_a1,
     author = {M. F. Gamal'},
     title = {Regular factorization of the scalar characteristic function},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {19--50},
     publisher = {mathdoc},
     volume = {270},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2000_270_a1/}
}