SHIFT OF 2Sl/2 HYPERFINE SPLITTINGS DUE TO BLACKBODY RADIATION AND ITS INFLUENCE ON FREQUENCY STANDARDS W.M. Itano, L.L. Lewis and D.J. Wineland J. Phys. Colloques, 42 C8 (1981) C8-283-C8-287 DOI: 10.1051/jphyscol:1981835