@article{10_4153_CMB_1967_044_x,
     author = {Putz, Randee},
     title = {An {Estimate} for the order of {Rational} {Matrices}},
     journal = {Canadian mathematical bulletin},
     pages = {459--461},
     year = {1967},
     volume = {10},
     number = {3},
     doi = {10.4153/CMB-1967-044-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1967-044-x/}
}