Lopushanskaya, G. P., and A. O. Lopushanskyi. “Space-Time Fractional Cauchy Problem in Spaces of Generalized Functions”.
Ukrains’kyi Matematychnyi Zhurnal, vol. 64, no. 8, Aug. 2012, pp. 1067-79,
https://umj.imath.kiev.ua/index.php/umj/article/view/2641.