The multishell complex in Cygnus: High-velocity motions in the nebula Simeiz 55 Esipov, V. F. ; Lozinskaya, T. A. ; Mel'Nikov, V. V. ; Pravdikova, V. V. ; Sitnik, T. G. ; Nichols-Bohlin, J. Abstract Publication: Astronomy Letters Pub Date: July 1996 Bibcode: 1996AstL...22..509E