3. P. Paclík, J. Novovicová, and R. P. W. Duin, “Building Road-Sign Classifiers Using a Trainable Similarity Measure” IEEE Transactions on Intelligent Transportation Systems, vol. 7, no. 3, September 2006
4. de la Escalera , L. E. Moreno , M. A. Salichs and J. M. Armingol, Road traffic sign detection and classification, IEEE Transactions on Industrial Electronics, 44(5), 848-859, 1997.
5. C.Y. Fanga,C.S. Fuhb, P.S. Yena, S. Cherngc, S.W. Chendy94 , “ An automatic road sign recognition system based on a computational model of human recognition processing” , Computer Vision and Image Understanding 96 (2004) 237–268