IGNATOV, Ignat; POPOVA, Teodora Petrova; BANKOVA, Ralitsa; NESHEV, Nikolai. Spectral analyses of fresh and dry Hypericum perforatum L. Effects with colloidal nano silver 30 ppm. Plant Science Today, [S. l.], v. 9, n. 1, p. 41–47, 2022. DOI: 10.14719/pst.1429. Disponível em: https://horizonepublishing.com/journals/index.php/PST/article/view/1429. Acesso em: 5 dec. 2025.