González-Concepción, C., Gil-Fariña, M. C., & Pestano-Gabino, C. (2018). Identifying economic cycles in Spain using wavelet functions: oil price, industrial production and consumer price indices. Revista Electrónica De Comunicaciones Y Trabajos De ASEPUMA, 19(1), 1–16. https://doi.org/10.24310/recta.19.1.2018.19893