ABSTRACT
References .......................................................................................................................... 606
In order to ensure continuity of the excellent coverage of this topic, first by Haslam1,2 and
later by Porter,3,4 this chapter will follow broadly the format of the 19883 and 19944
contributions. Complementary to these are reviews by Hemingway,5 Porter,6 and Ferreira
et al.7-12 Owing to the comprehensiveness of the Porter reviews3,4 and in view of the large
number of compounds covered therein, the current contribution is focused on developments
in the post-1992 period.
