“…The optimal drift distribution problem arose when solving two problems of different types, but all of them ultimately came down to solving a certain Fredholm integral equation of the second kind. Namely, the paper [12] was devoted to the problem of optimization of small deviation for mixed fractional Brownian motion with trend for the case H ∈ (0, 1/2), whereas in the paper [13], the same problem was considered for the case H ∈ (1/2, 1). The paper [14] studied the problem of minimization of the entropy functional appearing under the distribution of the drift, and this problem was studied for H ∈ (0, 1/2).…”