pH-sensitive polyvinylpyrrolidone-acrylic acid hydrogels: Impact of material parameters on swelling and drug release . Brazilian Journal of Pharmaceutical Sciences, [S. l.], v. 50, n. 1, p. 173–184, 2014. DOI: 10.1590/S1984-82502011000100018. Disponível em: https://revistas.usp.br/bjps/article/view/80863.. Acesso em: 9 may. 2024.