Acoustic Paramagnetic Resonance in Arsenic-Doped GermaniumRemoveH. F. Lockwood, K. -F. Etzold, and B. Josephson, Jr.Phys. Rev. Lett. 21, 1471 (1968)
Ion-Ion Potentials and the Compressibility of Nuclear MatterRemoveWerner Scheid, Rainer Ligensa, and Walter GreinerPhys. Rev. Lett. 21, 1479 (1968)