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        </li>
        <li>
          Ralph Raimi,<br>
          The Peculiar Distribution of First Digits,<br>
          Scientific American,<br>
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        </li>
        <li>
          Dennis Stanton, Dennis White,<br>
          Constructive Combinatorics,<br>
          Springer, 1986,<br>
          ISBN: 0387963472.
        </li>
        <li>
          Gabor Szego,<br>
          Orthogonal Polynomials,<br>
          American Mathematical Society, 1992,<br>
       