JANKECH, Timotej; MALIAROVÁ, Mária; MARTINKA, Nicholas. Determination of methylxanthines in tea samples by HPLC method. Nova Biotechnologica et Chimica, [S. l.], v. 18, n. 2, p. 124–132, 2019. DOI: 10.2478/nbec-2019-0015. Disponível em: https://office.nbc-journal.org/index.php/NBC/article/view/518. Acesso em: 27 oct. 2026.