Bril-Mascarenhas, T., A. Maillet, and P.-L. Mayaux. “Process Tracing: Induction, Deduction, and Causal Inference”. Revista De Ciencia Política, vol. 37, no. 3, Dec. 2017, pp. 659-84, doi:10.4067/S0718-090X2017000300659.