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\bibitem{1633} Petia Radeva, \& Enric Marti. (1995).<a target={\textquoteright}_blank{\textquoteright} href={\textquoteright}http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.52.7495{\textquoteright} >  Facial Features Segmentation by Model-Based Snakes </a> In \textit{International Conference on Computing Analysis and Image Processing}. Bellaterra (Barcelona), Spain.

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