Intraspecific variability of Holostylis reniformis: concentration of lignans, as determined by maceration and supercritical fluid extraction (SFE-CO2), as a function of plant prove... oleh Gislaine F. Martins, Marcos D. P. Pereira, Lucia M. X. Lopes, Tito da Silva, Paulo de T. Vieira e Rosa, Fernanda P. Barbosa, Gisele B. Messiano, Antoniana U. Krettli