GNU libplot is dedicated to Allen V. Hershey, whose Fortran system for
integrated cartographic plotting and scientific typography, with full
support for affine coordinate transformations, served as an inspiration.

   @Article{Hershey72,
     author =       {Allen V. Hershey},
     title =        {A Computer System for Scientific Typography},
     journal =      {Computer Graphics and Image Processing},
     year =         {1972},
     volume =       {1},
     number =       {4},
     pages =        {373--385}}.