@article {georgantopoulos2011x,
	title = {X-ray observations of highly obscured $\tau$9. 7 $μ$m> 1 sources: an efficient method for selecting Compton-thick AGN?},
	journal = {Astronomy \& Astrophysics},
	volume = {531},
	year = {2011},
	pages = {A116},
	publisher = {EDP Sciences},
	author = {Georgantopoulos, I and Dasyra, K. M. and Rovilos, E and Pope, A and Wu, Y and Dickinson, M and Comastri, A and Gilli, R and Elbaz, D and Armus, L and others}
}
