Phytochemical Screening of propolis samples from Northeast Brazil by HPLC: Green, black and red varieties. Research, Society and Development, [S. l.], v. 9, n. 10, p. e7799108936, 2020. DOI: 10.33448/rsd-v9i10.8936. Disponível em: https://www.rsdjournal.org/rsd/article/view/8936. Acesso em: 6 dec. 2025.