@article{10_4064_sm166_1_1,
     author = {John B. Conway and Gabriel Prǎjiturǎ},
     title = {On $\lambda $-commuting operators},
     journal = {Studia Mathematica},
     pages = {1--9},
     publisher = {mathdoc},
     volume = {166},
     number = {1},
     year = {2005},
     doi = {10.4064/sm166-1-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm166-1-1/}
}