Peña-Cuéllar DR, Ortiz-Sandoval JD, Espitia-Cuchango HE. Analysis of day-effect in the Colombian stock market using self-organizing maps. ITECKNE [Internet]. 2015Jun.16 [cited 2024Dec.27];12(1):84-9. Available from: https://revistas.ustabuca.edu.co/index.php/ITECKNE/article/view/825