KengneE. (2002) “Well-Posed and Regular Nonlocal Boundary-Value Problems for Partial Differential Equations”, Ukrains’kyi Matematychnyi Zhurnal, 54(8), pp. 1135-1142. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4152 (Accessed: 2November2024).