Improvement of the Spatial Amplitude Isotropy of a $^4$He Magnetometer Using a Modulated Pumping BeamB. Chéron, H. Gilles, J. Hamel, O. Moreau et E. NoëlJ. Phys. III France, 7 8 (1997) 1735-1740DOI: https://doi.org/10.1051/jp3:1997215
