Hyperfine interactions in stripped atoms isoelectronic with alkali atoms
S. N. Ray, James E. Rodgers, and T. P. Das
Phys. Rev. A 13, 1983 (1976) - Published 1 June, 1976
Three-body bound-state problem with Coulomb forces
R. K. Bhaduri and Y. Nogami
Phys. Rev. A 13, 1986 (1976) - Published 1 June, 1976