Madhuri, S., and Deekshitulu G.V.S.R. “Approximate Controllability of Second Order Neutral Stochastic Integro Differential Equations With Impulses Driven By Fractional Brownian Motion”. Discontinuity, Nonlinearity, and Complexity, vol. 10, no. 2, Aug. 2026, pp. 333-45, https://doi.org/10.5890/DNC.2021.06.012.