@article{1998-storjohann ,note={URL: {\tt http://dx.doi.org/10.1016/S0024-3795(98)10012-5}} ,author={Arne Storjohann} ,ISSN={0024--3795} ,journal={Linear Algebra and its Applications} ,MR={99j:65074} ,pages={25--45} ,title={{Computing Hermite and Smith normal forms of triangular integer matrices}} ,volume={282} ,year={1998} }