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\bibitem{1699} Jorge Bernal, F. Javier Sanchez, \& Fernando Vilari{\~n}o. (2011). Depth of Valleys Accumulation Algorithm for Object Detection. In \textit{14th Congr{\`e}s Catal{\`a} en Intel{\textperiodcentered}ligencia Artificial} (Vol. 1, pp. 71--80).

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