Searching for Heavily Obscured AGN at High Redshift with the SAFARI-SPICA Spectro-PhotometerF. Pozzi, C. Gruppioni, C. Vignali, A. Comastri, L. Spinoglio and M. MagliocchettiSPICA joint European/Japanese Workshop, (2009) 04016DOI: https://doi.org/10.1051/spica/200904016