V 700 Cygni and AW Virginis: Two W-type W UMa systems with spotted componentsP. G. Niarchos, M. Hoffmann and H. W. DuerbeckAstron. Astrophys. Suppl. Ser., 124 2 (1997) 291-298DOI: https://doi.org/10.1051/aas:1997193