1. I. D. Kazachkovskii, “Horizontal injection in a proton synchrotron with variation of the frequency,” Report No. 115/2, Physics and Power-Engineering Institute (1948).
2. O. D. Kazachkovskii, “Particle motion in a proton synchrotron with a local accelerating field,” Report No. 115/1, Physics and Power-Engineering Institute (1948).