Observation of population inversion of holes in Ge in crossed E and H fields from the spontaneous far-infrared emission Andronov, A. A. ; Gavrilenko, V. I. ; Grishin, O. F. ; Murzin, V. N. ; Nozdrin, Yu. N. ; Stoklitskii, S. A. ; Chebotarev, A. P. ; Shastin, V. N. Abstract Publication: Soviet Physics Doklady Pub Date: November 1982 Bibcode: 1982SPhD...27..932A