Deletion of Historic recurrence

Comment: I don't think that this article can be called "synthesis" with a link to |original research, because reference is made to the theories of many notable thinkers.  I would like a better description of the work of G.W. Trompf, because, based on the title of Trompf's  book,  it seems to be perhaps the strongest reference.  It's a bit sketchy now  - how about publisher, ISBN and so on, plus a more detailed summary of Trompf's thinking
Stance: keep
Cited policy: Wikipedia:No original research (WP:OR)