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  1. 1
    Published 1952
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  2. 2
    Published 1980
    Journal
  3. 3
    Published 2001
    Journal
  4. 4
    Published 1944
    Journal
  5. 5
    Published 1973
    Journal
  6. 6
    Published 1972
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  7. 7
    Published 1990
    Journal
  8. 8
    Published 1957
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    Journal
  9. 9
    Journal
  10. 10
    Published 2005
    Journal
  11. 11
    Published 1997
    Journal
  12. 12
    Published 1993
    Journal
  13. 13
    Published 1967
    Journal
  14. 14
    Published 1987
    Journal
  15. 15
    Published 2003
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  16. 16
    Published 1994
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  17. 17
    Published 1983
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  18. 18
    Published 2003
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  19. 19
    Published 2002
    Journal
  20. 20
    Published 1995
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