SPEEDUP Code for Calculation of Transition Amplitudes via the Effective Action Approach. Communications in Computational Physics, [S. l.], v. 11, n. 3, p. 739–755, 2012. DOI: 10.4208/cicp.131210.180411a. Disponível em: https://www.global-sci.com/index.php/cicp/article/view/7478. Acesso em: 5 dec. 2025.