Virtual cathode microwave device research: Theory and experiment Selemir, V. D. ; Alekhin, B. V. ; Vatrunin, V. E. ; Dubinov, A. E. ; Stepanov, N. V. ; Shamro, O. A. ; Shibalko, K. V. Abstract Publication: Plasma Physics Reports Pub Date: August 1994 Bibcode: 1994PlPhR..20..621S