“Automatic Placement of Elements of up to Three Sets in Venn Diagram Operations Using a Wolfram-Mathematica Command”. Selecciones Matemáticas 11, no. 01 (julho 29, 2024): 104–116. Acesso em julho 18, 2026. https://revistas.unitru.edu.pe/index.php/SSMM/article/view/5561.