R. Niels, D. Willems, и L. Vuurpijl. Proceedings of the 1st International Conference on Frontiers in Handwriting Recognition, стр. 296-301. Montreal, Canada, (2008)
X. Zhou, и C. Liu. Proceedings of the Ninth international conference on document analysis and recognition (ICDAR'07), стр. 377-381. Curitiba, Brazil, (2007)
O. Lassila. Proceedings of the First International Semantic Web Conference, ISWC 2002, Sardinia, Italy, 2342, стр. 307-317. Springer-Verlag, Heidelberg, Germany, (июня 2002)