[1]
V. V. Horodets’kyi, O. V. Martynyuk, and R. I. Petryshyn, “Nonlocal multipoint (in time) problem for evolutionary pseudodifferential equations with analytic symbols in spaces of type $W$”, Ukr. Mat. Zhurn., vol. 71, no. 9, pp. 1208-1226, Sep. 2019.