Magnetooptical Effects at Submillimetre Wavelengths Near AFMR in YFeO3 A.A. Mukhin, V.D. Travkin, S.P. Lebedev, A.S. Prokhorov, A.M. Balbashov and I. Yu. Parsegov J. Phys. IV France, 07 C1 (1997) C1-713-C1-714 DOI: 10.1051/jp4:19971290