@article{ZNSL_1985_141_a7,
     author = {A. L. Vol'berg},
     title = {A constructive proof of the {Chang-Marshall} theorem},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {149--153},
     publisher = {mathdoc},
     volume = {141},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1985_141_a7/}
}