Characteristics of the Villagers’ Drawings on the Village Development in Lao P.D.R. International Society for Geometry and Graphics,Journal for Geometry and Graphics. 2003. Volume 7 (No.1), pp75-87
Students’ Spatial Ability Regarding to the Mental Cutting test (MCT) in Lao P.D.R. Proceedings of The 10th International Conference on Geometry and Graphics, Kyiv, Ukraine. 2002. Vol.3, pp39-43
Composition of Lao Decorative Arts Refferring Computational Geometry Approach. Proceedings of The 10th International Conference on Geometry and Graphics, Kyiv, Ukraine. 2002. Vol.3, pp26-30