Rendering plant leaves faithfully. - Oliver Franzke; Oliver Deussen (SIGGRAPH, 2003)

Real-time rendering of billboard plants in a dynamic lighting environment. - Oliver Franzke; Oliver Deussen (SIGGRAPH Sketches, 2005)

Realistic real-time rendering of landscapes using billboard clouds. - Stephan Behrendt; Carsten Colditz; Oliver Franzke; Johannes Kopf 001; Oliver Deussen (Comput. Graph. Forum, 2005)