In vivo and in situ characterization of leaves using OPC technique A. C. Pereira, J. J. Alvarado-Gil, O. Zelaya, H. Vargas et N. CellaJ. Phys. IV France, 04 C7 (1994) C7-527-C7-530DOI: https://doi.org/10.1051/jp4:19947124