1. Department of Chemistry, Incheon National University, 119 Academy‐ro, Yeonsu‐gu, Incheon, 406‐772, South Korea
2. Department of Chemistry, University of Virginia, P. O. Box 400319, Charlottesville, Virginia 22904‐4319, USA, http://chem.virginia.edu/faculty‐research/emeritus‐faculty/lester‐s‐andrews/