HORODETS’KYI, V. V.; MARTYNYUK, O. V.; PETRYSHYN, R. I. Nonlocal multipoint (in time) problem for evolutionary pseudodifferential equations with analytic symbols in spaces of type $W$. Ukrains’kyi Matematychnyi Zhurnal, v. 71, n. 9, p. 1208-1226, 25 Sep. 2019.