Sossa Azuela, Juan Humberto, Fernando Arce-Vega, Wilfrido Gómez-Flores, and Laura Lira. 2021. “Training an Artificial Neural Network to Compute the Euler Number of a 2-D Binary Image Based on Vertex Chain Codification”. International Journal of Combinatorial Optimization Problems and Informatics 13 (1):4-17. https://www.ijcopi.org/ojs/article/view/261.