@article{Graessl04:ISO,<br>  title = {Improving Statistical Object Recognition Approaches by a Parameterization of Normal Distributions},<br>  journal = {Pattern Recognition and Image Analysis. Advances in Mathematical Theory and Applications (PRIA)},<br>  author = {Christoph Gräßl and Frank Deinzer and Frank Mattern and Heinrich Niemann},<br>  year = {2004},<br>  pages = {222-230},<br>}<br>