Peculiarities of the Pion-Nuclear InteractionRemoveM. Ericson, T. Ericson, and M. KrellPhys. Rev. Lett. 22, 1189 (1969)
Phenomenological Approach to Four-Particle, Four-Hole States in O16RemoveS. Das Gupta and N. de TakacsyPhys. Rev. Lett. 22, 1194 (1969)