Yoon, Hoe-Jin; Jung, Hein; Ahn, Yun Soo; Nandhakumar, Raju; Kim, Jun Soo; Kim, Kwan Mook Bulletin of the Korean Chemical Society, 2012, vol. 33, # 5 p. 1715 - 1718 doi: 10.5012/bkcs.2012.33.5.1715