@article{10_4064_sm161_1_1,
     author = {Muneo Ch\={o} and Tadasi Huruya},
     title = {Trace formulae for $p$-hyponormal operators},
     journal = {Studia Mathematica},
     pages = {1--18},
     publisher = {mathdoc},
     volume = {161},
     number = {1},
     year = {2004},
     doi = {10.4064/sm161-1-1},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm161-1-1/}
}