Effect of mineral matter and phenol in supercritical extraction of oil shale with toluene A. Abourriche, M. Ouman, S. Ichcho, H. Hannache, R. Pailler, R. Naslain, M. Birot et J.-P. Pillot J. Phys. IV France, 123 (2005) 23-27 DOI: 10.1051/jp4:2005123003