21
Published 1999
American Chemical Society

22
Published 2001
American Chemical Society

23
Published 2001
American Chemical Society

24
Published 2007
American Chemical Society

25
Published 1982
American Chemical Society

26
Published 1977
American Chemical Society

28
Published 1992
American Chemical Society

30
Published 2003
American Chemical Society

31
Published 2009
American Chemical Society

32
Published 1985
American Chemical Society

33
Published 2014
American Chemical Society

34
Published 1978
American Chemical Society

35
Published 1989
American Chemical Society

36
Published 1980
American Chemical Society

37
Published 1991
American Chemical Society

38
Published 2005
American Chemical Society