%0 Journal Article %A Mohammed A. Almalahi %A Satish K. Panchal %T On the theory of $\psi $-hilfer nonlocal Cauchy problem %J Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika %D 2021 %P 159-175 %V 14 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JSFU_2021_14_2_a3/ %G en %F JSFU_2021_14_2_a3