TY - JOUR T1 - X-ray observations of highly obscured $\tau$9. 7 $μ$m> 1 sources: an efficient method for selecting Compton-thick AGN? JF - Astronomy & Astrophysics Y1 - 2011 A1 - Georgantopoulos, I A1 - Dasyra, K. M. A1 - Rovilos, E A1 - Pope, A A1 - Wu, Y A1 - Dickinson, M A1 - Comastri, A A1 - Gilli, R A1 - Elbaz, D A1 - Armus, L A1 - others PB - EDP Sciences VL - 531 ER -