CHYAN, C.-J.; HENDERSON, J.; LO, H.-C. POSITIVE SOLUTIONS IN AN ANNULUS FOR NONLINEAR DIFFERENTIAL EQUATIONS ON A MEASURE CHAIN. Tamkang Journal of Mathematics, [S. l.], v. 30, n. 3, p. 231–240, 1999. DOI: 10.5556/j.tkjm.30.1999.4230. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4230. Acesso em: 22 dec. 2024.