ld.wolfram.com/JacobiEllipticFunctions.html" target="_top">Weisstein,
            Eric W. "Jacobi Elliptic Functions." From MathWorld - A Wolfram
            Web Resource.</a>
          </p></div>
<div id="ftn.math_toolkit.special.jacobi.jac_over.f2" class="footnote"><p><a href="#math_toolkit.special.jacobi.jac_over.f2" class="para"><sup class="para">[4] </sup></a>
            <a href="http://dlmf.nist.gov/22" target="_top">Digital Library of Mathematical
            Functions: Jacobian Elliptic Functions</