1
2
3
published 1993
Journal
5
published 1991
Journal
6
published 1991
Journal
7
8
published 1982
Journal
9
published 1978
Journal
10
published 1968
Journal
11
published 1967
Journal
12
Published in Angewandte Chemie (1953)
Journal
13
published 1948
Journal
14
published 1923
Journal
16