Large-amplitude Irregular Variable V559 Lyr Kato, Taichi ; Uemura, Makoto ; Takamizawa, Kesao ; Kinnunen, Timo ; Nakatani, Hitoshi ; Itoh, Hitoshi ; Sato, Minoru Abstract Publication: Information Bulletin on Variable Stars Pub Date: May 2001 Bibcode: 2001IBVS.5085....1K Keywords: photometry; spectroscopy