Photoacoustic spectroscopy and thermal relaxation method to evaluate corn moisture content F. Pedrochi, A.N. Medina, A.C. Bento, M.L. Baesso, M.L.S. Luz and V.A. Dalpasquale J. Phys. IV France, 125 (2005) 857-860 DOI: 10.1051/jp4:2005125198