J. Wang, K. Yao & Y. S. Liang. (1970). On the Connection Between the Order of Riemann-Liouville Fractional Calculus and Hausdorff Dimension of a Fractal Function.
            <i>Analysis in Theory and Applications</i>. <i>32</i> (3).
            283-290.
         doi:10.4208/ata.2016.v32.n3.6