Trung, Nguyen Duc, Le Xuan Truong, Tan Duc Do, and Nguyen Ngoc Trong. “Local Hessian Estimate for Second Order Parabolic Equation in Hardy Spaces”. MATHEMATICA SCANDINAVICA 131, no. 3 (October 23, 2025). Accessed December 5, 2025. https://www.mscand.dk/article/view/159735.