Effects of 9.2-kMc/sec Ultrasonics on Electron Spin Resonances in Quartz Jacobsen, E. H. ; Shiren, N. S. ; Tucker, E. B. Abstract Publication: Physical Review Letters Pub Date: July 1959 DOI: 10.1103/PhysRevLett.3.81 Bibcode: 1959PhRvL...3...81J