ALA, S.; AFROUZI, G. A. Existence of Positive Solutions for a Class of Variable Exponent Elliptic Systems. Mathematica Scandinavica, Berkeley, CA, United States, v. 118, n. 1, p. 83–94, 2016. DOI: 10.7146/math.scand.a-23298. Disponível em: https://journals.msp.org/mscand/article/view/365. Acesso em: 24 jul. 2026.