Harnack Inequalities and Applications for Stochastic Differential   Equations Driven by Fractional Brownian Motion
  In the paper, Harnack inequalities are established for stochastic differential equations driven by fractional Brownian motion with Hurst parameter $H<1/2$. As applications, strong Feller property, log-Harnack inequality and entropy-cost inequality are given. 
Xi-Liang Fan
math.PR