@article {28478,
	title = {Symbiotic Binary YY Her   Eclipses, Flares and Outbursts},
	volume = {304},
	year = {2006},
	month = {2006/08/1},
	pages = {307 - 309},
	abstract = {The long-term CCD and photoelectric observations of YY Her covering the period of its post-outburst activity (JD 2 451 823 -- 2 452 996) are presented. We explain the periodic variations of the brightness of YY Her by the eclipses of the components in the system. The model with a deformed (non-homogeneous) envelope, surrounding the white dwarf is discussed. In addition, we observed a flare in about JD 2 452 440, during the primary minimum, that was later followed by an energetic outburst in JD 2 452 700.},
	keywords = {Stars: Binaries: Symbiotic, Stars: Individual: YY Her},
	isbn = {0004-640X},
	url = {https://ui.adsabs.harvard.edu/abs/2006Ap\&SS.304..307H},
	author = {Hric, L. and G{\'a}lis, R. and Niarchos, P. and Gazeas, K.}
}
