The 5th International Symposium on Blue Laser and Light Emitting Diodes (ISBLLED-2004), 2004-03-15
The 5th International Symposium on Blue Laser and Light Emitting Diodes (ISBLLED-2004), 2004-03-15
The 3rd International Symposium on the Advanced Functional Materials in the North-East Region, 2000-10-10
The 9th Seoul International Symposium on the Physics of Semiconductors and Applications, 1998-11-06