Beverini, N., O. Faggioni, C. Carmisciano, E. Alzetta, E. Maccioni, M. Francesconi, A. Donati, E. Simeone, and F. Strumia. 1998. “A Project for a New Alkali Vapour Magnetometer, Optically Pumped by a Diode Laser”. Annals of Geophysics 41 (3). https://doi.org/10.4401/ag-4335.