21
Published 1991
American Chemical Society

22
Published 1991
American Chemical Society

23
Published 1992
American Chemical Society

24
Published 1993
American Chemical Society

25
Published 1993
American Chemical Society

26
Published 1994
American Chemical Society

27
Published 1994
American Chemical Society

29
Published 1998
American Chemical Society

30
Published 2003
American Chemical Society

31
Published 2002
American Chemical Society

32
Published 2003
American Chemical Society

33
Published 2004
American Chemical Society

34
Published 2007
American Chemical Society

35
Published 2007
American Chemical Society

36
Published 2008
American Chemical Society

37
Published 2008
American Chemical Society

38
Published 2010
American Chemical Society

39
Published 2011
American Chemical Society

40
Published 2012
American Chemical Society