Rashid, M. H. M. 2011. “Weyl’s Theorem for Algebrascally $wF(p, R, q)$ Operators With $p, Q > 0$ and $q \geq 1$”. Ukrains’kyi Matematychnyi Zhurnal 63 (8), 1092-1102. https://umj.imath.kiev.ua/index.php/umj/article/view/2787.