@article{EXMA_2005__14_4_54858,
     author = {Brzezi\'nski, J. and Holszty\'nski, W. and Kurlberg, P.},
     title = {On the congruence  modulo .},
     journal = {Experimental mathematics},
     pages = {391--401},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {2005},
     zbl = {1152.11322},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_2005__14_4_54858/}
}