@article{10_1007_s10587_014_0077_x,
     author = {Zima, Miros{\l}awa},
     title = {Spectral radius inequalities for positive commutators},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1--10},
     publisher = {mathdoc},
     volume = {64},
     number = {1},
     year = {2014},
     doi = {10.1007/s10587-014-0077-x},
     mrnumber = {3247438},
     zbl = {06391470},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-014-0077-x/}
}