Yuan, C., Zhang, X., & Zhu, C. (2015). Approximate controllability of impulsive fractional stochastic differential equations with state-dependent delay. Advances in Difference Equations, 2015(1), p. 91. doi:10.1186/s13662-015-0412-z

Yuan, Chenggui, Xiaozhi Zhang, and Chuanxi Zhu. "Approximate Controllability of Impulsive Fractional Stochastic Differential Equations With State-dependent Delay." Advances in Difference Equations 2015, no. 1 (2015): 91.

Yuan, Chenggui, Xiaozhi Zhang, and Chuanxi Zhu. "Approximate Controllability of Impulsive Fractional Stochastic Differential Equations With State-dependent Delay." Advances in Difference Equations 2015.1 (2015): 91.