@article{10_4064_cm_40_1_159_165,
     author = {Jeffrey R. Butz},
     title = {Unitary parts of generalized {Hankel} operators},
     journal = {Colloquium Mathematicum},
     pages = {159--165},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {1978},
     doi = {10.4064/cm-40-1-159-165},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-40-1-159-165/}
}