In this paper, we are concerned with the oscillatory
behavior of a class of fractional differential equations
with functional terms. The fractional derivative is defined
in the sense of the modified Riemann-Liouville derivative.
Based on a certain variable transformation, by using a generalized
Riccati transformation, generalized Philos type
kernels, and averaging techniques we establish new interval
oscillation criteria. Illustrative examples are also given.