SrivastavaH. M., BansalM. K., and HarjuleP. “A Class of Fractional Integral Operators Involving a Certain General Multiindex Mittag-Leffler Function ”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 75, no. 8, Aug. 2023, pp. 1096 -12, doi:10.3842/umzh.v75i8.863.