Progress report

Partha Pratim Goswami, Andrzej Lingas
On Joint Triangulations of Two Sets of Points in the Plane, Proc. of the First India-Taiwan Conference on Discrete Mathematics, 2009, pp. 34-43, 2009.
75.	Subir Kumar Ghosh, Partha Pratim Goswami	Unsolved Problems in Visibility Graph Theory, Proc. of the First India-Taiwan Conference on Discrete Mathematics, 2009, pp. 44-54, 2009.
76.	Subir Ghosh, Partha Goswami, Anil Maheshwari, Subhas Nandy, Sudebkumar Pal and Swami Sarvattomananda	Algorithms for computing diffuse reflection paths in polygons, Accepted for publication in the Proc. of the Third Annual Workshop on Algorithms and Computation to be held during February 18-20, 2009.
77.	Tapashree Roy and Subal Kar	Negative Refractive Index and Transmission Properties through Frequency Dispersive Left-Handed Materials