Boateng , E., Asafo-Adjei, E., Gatsi, J. G., Gherghina, Ştefan C. ., & Simionescu, L. N. (2022). Multifrequency-based non-linear approach to analyzing implied volatility transmission across global financial markets. Oeconomia Copernicana, 13(3), 699–743. https://doi.org/10.24136/oc.2022.021