1983 A. 409 280c (table) Shape change and superdeformation at high spin.
2010 F. Yang & J. H. Hamilton (rev. ed.) xi. 533 Centered around N = Z = 38 and around Z = 38, N = 60, 62 are two new islands of superdeformation with quadrupole deformation β2 ≃ 0.40–0.45.