Cong Tam, Nguyen. “STABLE APPROXIMATION OF SOLUTIONS OF A CAUCHY PROBLEM FOR POISSON EQUATION IN THE UPPER HALF-SPACE”. Science and Technology Development Journal 5, no. 12 (December 31, 2002): 11-15. Accessed December 22, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3459.