Study the effects of bromothymol blue material on the optical properties for polystyrene (PS). Baghdad Science Journal, Iraq, Baghdad, v. 10, n. 1, p. 56–63, 2013. DOI: 10.21123/bsj.2013.10.1.56-63. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1428.. Acesso em: 3 jul. 2024.