CHEMICAL PHYSICS LETTERS, vol. 244, no. 3-4, page. 213 - 217, 1995-10-06
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, vol. 15, no. 8, page. 663 - 669, 1994-08-20
CHEMICAL PHYSICS LETTERS, vol. 216, no. 3-6, page. 483 - 487, 1993-12-31