LUPAK, O.; KOVALCHUK, H.; ANTONYAK, H. Potentiometric determination of antioxidant activity of extracts of Calendula Officinalis L. plants under the influence of growth biostimulants. ScienceRise: Biological Science, [S. l.], n. 6 (9), p. 10–13, 2017. DOI: 10.15587/2519-8025.2017.119086. Disponível em: https://journals.uran.ua/sr_bio/article/view/119086. Acesso em: 17 may. 2024.