@article{10_4064_ap_44_2_185_195,
     author = {J. Janas},
     title = {Spectral properties of doubly commuting hyponormal operators},
     journal = {Annales Polonici Mathematici},
     pages = {185--195},
     publisher = {mathdoc},
     volume = {44},
     number = {2},
     year = {1984},
     doi = {10.4064/ap-44-2-185-195},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-44-2-185-195/}
}