1
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Affiliation(s)
- K. Appel
- University of Illinois, Urbana, Illinois; Wilkes College, Wilkes-Barre, Pennsylvania
| | - W. Haken
- University of Illinois, Urbana, Illinois; Wilkes College, Wilkes-Barre, Pennsylvania
| | - J. Koch
- University of Illinois, Urbana, Illinois; Wilkes College, Wilkes-Barre, Pennsylvania
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2
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Affiliation(s)
- K. Appel
- University of Illinois, Urbana, Illinois
| | - W. Haken
- University of Illinois, Urbana, Illinois
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