Yu. E. Loginov, A. I. Egorov, È. I. Malyutenkov, S. È. Malyutenkova, V. V. Martynov, “Investigation of the effect of resonant environment (Ms̈sbauer screen) on the observed half-life of the ${}^{119m1}$Sn isomer ($E=23.8$ keV, $T_{1/2}\sim18$ ns)”, Pis'ma v Zh. Èksper. Teoret. Fiz., 87:1 (2008), 7–9; JETP Letters, 87:1 (2008), 4–6
