ÖZTÜRK, Y.; GÜLSU, M. Approximate solution of generalized pantograph equations with variable coefficients by operational method. An International Journal of Optimization and Control: Theories & Applications (IJOCTA), [S. l.], v. 7, n. 1, p. 66–74, 2016. DOI: 10.11121/ijocta.01.2017.00308. Disponível em: http://ijocta.org/index.php/files/article/view/308. Acesso em: 5 apr. 2025.