FREY, T. ON IMPROVEMENT OF THE RUNGE-KUTTA-NYSTRÖM METHOD. Periodica Polytechnica Electrical Engineering, [S. l.], v. 2, n. 2, p. 141–165, 1958. Disponível em: https://pp.bme.hu/ee/article/view/5411. Acesso em: 19 may. 2024.