@article{ZNSL_1981_113_a21,
     author = {D. R. Yafaev},
     title = {Counterexample to a~uniqueness theorem foranalytic operator functions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {261--263},
     year = {1981},
     volume = {113},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_113_a21/}
}