http://en.wikipedia.org/wiki/Elliptic_function

http://en.wikipedia.org/wiki/Jacobi_elliptic_functions

http://mathworld.wolfram.com/EllipticFunction.html

http://mathworld.wolfram.com/JacobiEllipticFunctions.html

http://websites.math.leidenuniv.nl/algebra/ellipticfunctions.pdf

http://www.cs.bath.ac.uk/MPrice/downloads/Elliptic.pdf

http://www.math.jussieu.fr/~nekovar/co/ln/el/el1.pdf

http://www.rose-hulman.edu/mathjournal/archives/2009/vol10-n2/paper2/v10n2-2pd.pdf

http://www.mhtlab.uwaterloo.ca/courses/me755/web_chap3.pdf

http://www.mai.liu.se/~vlatk48/papers/lect2-agm.pdf

http://arxiv.org/pdf/0711.4064v1.pdf

http://files.vlsi.uwindsor.ca/88-521/pdf/Elliptic.pdf

http://eceweb1.rutgers.edu/~orfanidi/ece521/notes.pdf

http://www.matheonics.com/Tutorials/Elliptic.html

http://books.google.com/books?id=L2t04rFkRUgC&pg=PP12&lpg=PP12&dq=filter+elliptic&source=bl&ots=5P9fJDMN-c&sig=p2oUSF7HAt-wSqEHgmPYrAVkYDo&hl=en&sa=X&ei=zOkdUanKGeil4ATp84CYAw&ved=0CF4Q6AEwCDgU