Panagiotou, Dimitrios, Sophia Siori, and Panos Fousekis. “Dominant Price Relationships, Wavelet Coherence and Wavelet Power Spectrum Between the Futures Markets of the Arabica and Robusta Coffee Varieties”. SPOUDAI Journal of Economics and Business 76, no. 1-2 (October 16, 2026): 29–45. Accessed October 17, 2026. https://spoudai.org/index.php/journal/article/view/619.