1. E. Baker and M. Seltzer. Evolving line drawings. In Proceedings of the Fifth International Conference on Genetic Algorithms, pages 91–100. Morgan Kaufmann Publishers, 1994.
2. J. Bird, P. Husbands, M. Perris, B. Bigge, and P. Brown. Implicit fitness functions for evolving a drawing robot. In Applications of Evolutionary Computing, pages 473–478. Springer, 2008.
3. J. Bird and D. Stokes. Minimal creativity, evaluation and fractal pattern discrimination. Programme Committee and Reviewers, page 121, 2007.
4. A. Borrell. CFDG Mutate.
http://www.wickedbean.co.uk/cfdg/index.html
, last accessed in November 2014.
5. C. Coyne. Context Free Design Grammar.
http://www.chriscoyne.com/cfdg/
, last accessed in November 2014.