On one class of operators associated with differential equations of fractional order. Aleroev, T.S. — 2005 Sibirskij Matematicheskij Zhurnal
A problem on the zeros of the Mittag-Leffler function and the spectrum of a fractional-order differential operator. Aleroev, T.S.; Aleroeva, H.T. — 2009 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]