Toward a mercury optical lattice clock: spectroscopy of the clock transition in fermionic isotopes - Mejri, S.; Petersen, M.; Magalhães, Daniel Varela; Mandache, C.; Dawkins, S.; Chicireanu, R.; Le Coq, Y.; Clairon, A.; Bize, Sebastien (European Frequency and Time Forum - EFTF, 2009)