Chlorophyll fluorescence emission and its relation to skin color and firmness during ripening of guava fruitIlana Urbano Bron, Rafael Vasconcelos Ribeiro, Marisa Azzolini, Eduardo Caruso Machado and Angelo Pedro JacominoFruits, 60 1 (2005) 25-32DOI: https://doi.org/10.1051/fruits:2005009