Calibration of a CO2 laser-based ethylene photoacoustic detector - Sarmiento, Raymund; Villagonzalo, Dioscoro; Flores, Adonis; Orosco, Erwin; Otadoy, Roland; Zuidberg, Ben; Sikkens, Cor (Proceedings of the 23rd Samahang Pisika ng Pilipinas Physics Congress, 2005)