• Przemyslaw Prusinkiewicz http://www.cpsc.ucalgary.ca/~pwp/
• uni calgary
• http://directory.google.com/Top/Computers/Artificial_Life/Lindenmayer_Systems/
• Jon McCormack www.csse.monash.edu.au/~jonmc/ resources/

related: Artificial Life and Algorithmic Botany

• Parametric L-systems and Their Application To the Modelling and Visualization of Plants http://algorithmicbotany.org/papers/hanan.dis1992.html