Salas-Matamoros , C. and Sánchez Guevara, J. 2023. On the relationship between expansión angle of earth-directed CMES and soft X-ray emission from their related flare. Revista de Matemática: Teoría y Aplicaciones. 30, 2 (Jul. 2023), 215–227. DOI:https://doi.org/10.15517/rmta.v30i2.50449.