6
Published 1982
American Chemical Society

8
Published 1985
American Chemical Society

10
Published 1987
American Chemical Society

11
Published 1987
American Chemical Society

13
Published 1990
American Chemical Society

15
Published 1991
American Chemical Society

16
Published 1991
American Chemical Society

17
Published 1991
American Chemical Society

18
Published 1992
American Chemical Society

19
Published 1992
American Chemical Society

20
Published 1992
American Chemical Society