Optimization problems with a periodic boundary-value condition and boundary control for gas-lifting wells. Neliniini Kolyvannya, [S. l.], v. 17, n. 2, p. 151–160, 2014. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/735. Acesso em: 21 jan. 2026.