@article{10_4064_aa127_3_2,
     author = {Roman Urban},
     title = {On density modulo 1 of some expressions
 containing algebraic integers},
     journal = {Acta Arithmetica},
     pages = {217--229},
     publisher = {mathdoc},
     volume = {127},
     number = {3},
     year = {2007},
     doi = {10.4064/aa127-3-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa127-3-2/}
}