1. Department
of Horticultural
Science, University of Minnesota, St. Paul,
Minnesota 55108, United States
2. Department of Chemistry, Gustavus Adolphus College, Saint Peter, Minnesota 56082,
United States
3. Department
of Chemistry, University of Minnesota,
Minneapolis, Minnesota 55455,
United States
4. Department
of Chemistry, Penn State Greater Allegheny, McKeesport, Pennsylvania
15132, United States
5. Department
of Chemistry, Drake University, Des Moines,
Iowa 50311, United States
6. Department
of Chemistry, University of St. Thomas,
St. Paul, Minnesota 55105,
United States