Bibliographical noteFunding Information:
The authors wish to express their gratitude to the Research Corporation (grant Number 8640); the Graduate School, University of Minnesota; and the U.S. Office of Naval Research (Contract No. N00014-80-C-0244) for financial support of this research. The Cary Model 17-D spectrophotometer was made available by funding received in part from the National Science Foundation (CHE 78-23857).
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