@conference {28487,
	title = {A spot model of the overcontact binary PY Lyrae},
	volume = {848},
	year = {2006},
	month = {2006/08/1},
	pages = {417 - 421},
	abstract = {The first BVRI CCD photometric observations of PY Lyrae were obtained at the Kryoneri Observatory in the summer of 2004. Five new times of minima and a new ephemeris were calculated. The light curves were analyzed with the Wilson-Devinney program, in order to derive the geometric and photometric elements of the system. A spot model was assumed in order to explain the pronounced O{\textquoteright}Connell effect.},
	keywords = {97.80.Fk, 97.80.Hn, close binaries, Eclipsing binaries, Spectroscopic binaries},
	isbn = {0094-243X},
	url = {https://ui.adsabs.harvard.edu/abs/2006AIPC..848..417M},
	author = {Manimanis, V. N. and Niarchos, P. G. and Gazeas, K. D.}
}
