Optimizing the Raman signal for characterizing organic samples: The effect of slit aperture and exposure time - Lázaro, João Carlos; Pacheco, Marcos Tadeu T.; Rodrigues, Kátia Calligaris; de Lima, Carlos José; Moreira, Leonardo Marmo; Villaverde, Antonio Balbin; Silveira Jr., Landulfo (Spectroscopy, 2009)