Georgantopoulos, I., Dasyra, K. M., Rovilos, E., Pope, A., Wu, Y., Dickinson, M., et al. (2011). X-ray observations of highly obscured τ9.7 μm > 1 sources: an efficient method for selecting Compton-thick AGN? Astronomy & Astrophysics, 531: A116, pp. 1-11. doi:10.1051/0004-6361/201016338.