KlyusI. S. and PtashnikB. I. (2003) “A Multipoint Problem for Pseudodifferential Equations”, Ukrains’kyi Matematychnyi Zhurnal, 55(1), pp. 22-29. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3884 (Accessed: 27July2024).