<br>
          Dover, 2007,<br>
          ISBN: 0486453391,<br>
          LC: QA299.3.D28.
        </li>
        <li>
          Sylvan Elhay, Jaroslav Kautsky,<br>
          Algorithm 655: IQPACK, FORTRAN Subroutines for the Weights of
          Interpolatory Quadrature,<br>
          ACM Transactions on Mathematical Software,<br>
          Volume 13, Number 4, December 1987, pages 399-415.
        </li>
        <li>
          Jaroslav Kautsky, Sylvan Elhay,<br>
          Calculation of the Weights of Inter