Drawing natural scenery by computer graphics

Computer-generated pen-and-ink illustration of trees

Proceedings of the 27th annual conference on Computer graphics and interactive techniques

Expressive Rendering: A Review of Nonphotorealistic Techniques

IEEE Computer Graphics and Applications

Formulated Silhouettes for Sketching Terrain

TPCG '03 Proceedings of the Theory and Practice of Computer Graphics 2003

Real-time pen-and-ink illustration of landscapes

Proceedings of the 4th international symposium on Non-photorealistic animation and rendering

A multiresolution model for non-photorealistic rendering of trees

ICCS'06 Proceedings of the 6th international conference on Computational Science - Volume Part II

Beyond photorealism

EGWR'99 Proceedings of the 10th Eurographics conference on Rendering