Santiago Ayala, Yolanda, and Santiago Rojas Romero. “Existence and Regularity of Solution of the Heat Equation in Periodic Sobolev Spaces”. Selecciones Matemáticas 6, no. 01 (July 21, 2019): 49-65. Accessed March 29, 2024. https://revistas.unitru.edu.pe/index.php/SSMM/article/view/2445.