@article {38517,
	title = {Monitoring crown defoliation and tree mortality in the fir-forest of Mount Parnis, Greece},
	year = {2018},
	author = {Tsopelas, Panaghiotis and Aggelopoulos, Athanasios and Economou, Anastasios and Voulala, Mari and Xanthopoulou, Eleni}
}
