1. Alpha-, beta- and gamma-ray spectroscopy;Nathan,1965
2. Liu Y-t, O.B. Nielsen, P. Salling and O. Skilbreid, Izv. Akad. Nauk SSSR (Ser. Fiz.), to be published.
3. Collective Nuclear Structure in the Even-Even Samarium Isotopes
4. A. Bohr and B. Mottelson, private communication.
5. Centrifugal stretching of nuclei