Quasi-periodic oscillations in AM HER spectrum in its intermediate state (July 1989). Somova, T. A. ; Somov, N. N. ; Bonnet-Bidaud, J. M. Abstract Publication: Soobshcheniya Spetsial'noj Astrofizicheskoj Observatorii Pub Date: 1992 Bibcode: 1992SoSAO..69...61S