Manual for Package pgfplots
2D/3D Plots in LATeX, Version 1.18.1
http://sourceforge.net/projects/pgfplots
About PGFPlots: Preliminaries
2.3The Team
pgfplots has been written mainly by Christian Feuersänger with many improvements of Pascal Wolkotte and Nick Papior Andersen as a spare time project. We hope it is useful and provides valuable plots.
If you are interested in writing something but don’t know how, consider reading the auxiliary manual TeX-programming-notes.pdf which comes with pgfplots. It is far from complete, but maybe it is a good starting point (at least for more literature).