@article{10_4064_cm110_1_8,
     author = {K. Fr\k{a}czek and M. Wysoki\'nska},
     title = {Note on the isomorphism problem for weighted unitary
operators associated with a nonsingular automorphism},
     journal = {Colloquium Mathematicum},
     pages = {201--204},
     publisher = {mathdoc},
     volume = {110},
     number = {1},
     year = {2008},
     doi = {10.4064/cm110-1-8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm110-1-8/}
}