Peña-Cuéllar D, Ortiz-Sandoval J, Espitia-Cuchango H. Analysis of day-effect in the Colombian stock market using self-organizing maps. ITECKNE [Internet]. 16Jun.2015 [cited 5May2024];12(1):84-. Available from: http://revistas.ustabuca.edu.co/index.php/ITECKNE/article/view/825