BULLETIN OF THE KOREAN CHEMICAL SOCIETY, vol. 18, no. 8, page. 789 - 791, 1997-08-20
TETRAHEDRON-ASYMMETRY, vol. 8, no. 8, page. 1179 - 1185, 1997-04-24
TETRAHEDRON-ASYMMETRY, vol. 8, no. 7, page. 1023 - 1026, 1997-04-11