Complex sentence: He continued to publish articles and participate in colloquia in this field after 1980; however, the publications discussed below represent the key, formative literature of Macneil's version of relational theory, while subsequent publications have been mainly explanatory of the work done throughout the 1970s.
Split into simpler sentences: He continued to publish articles and participate in colloquia in this field after 1980; however, the publications discussed below represent the key, formative literature of Macneil's version of relational theory. Subsequent publications have been mainly explanatory of the work done throughout the 1970s.