BULLETIN OF THE KOREAN CHEMICAL SOCIETY, vol. 20, no. 8, page. 917 - 920, 1999-08-20
TETRAHEDRON LETTERS, vol. 40, no. 34, page. 6281 - 6284, 1999-08-20
JOURNAL OF ORGANOMETALLIC CHEMISTRY, vol. 584, no. 1, page. 140 - 146, 1999-07-10