V. M. Mazur, Z. M. Bigan, P. S. Derechkey, and D. M. Symochko, “Excitation Cross Section of the 11/2− Isomeric State of 137Ce Nucleus in (y, n) Reaction in the 11–18-MeV Energy Interval of Gamma Quanta”, Ukr. J. Phys., vol. 61, no. 12, p. 1048, Jan. 2019.