VerezhakA. P., Horodets’kyiV. V., and PetryshynR. I. “A Problem for One Class of pseudodifferential evolutionary Equations Multipoint in the Time Variable”. Ukrains’kyi Matematychnyi Zhurnal 70, no. 3 (March 25, 2018): 337-355. Accessed November 21, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1560.