DĘBSKI, Roman. Gradient-Based Algorithms in the Brachistochrone Problem Having a Black-Box Represented Mathematical Model. Journal of Telecommunications and Information Technology, Warsaw, Poland, v. 55, n. 1, p. 32–40, 2014. DOI: 10.26636/jtit.2014.1.1003. Disponível em: https://www.jtit.pl/jtit/article/view/1003. Acesso em: 10 jun. 2026.