Doğan, Sermet, and Sinan Aytekin. “Challenging the Efficient Market Hypothesis: Multifractal Insights into Price – Volume Cross-Correlations in the S&P 500”. Scientific Annals of Economics and Business 73, no. 1 (March 16, 2026): 167–201. Accessed May 1, 2026. https://saeb.feaa.uaic.ro/index.php/saeb/article/view/3590.