In the citation graph below, I've attempted to summarize the important early
papers (and other work) that started the field of mathematical epidemiology.
(Please use your browser's zoom-feature to read).
The links represent "documented influence" rather than strict crediting of
citations -- for example, Reed and Frost never explicitly acknowledged Lotka's
influence on their work, to the best of my knowledge, but given that he was
working at Hopkins at the time, they were almost certainly influenced by his
research. Also, the list isn't exhaustive -- Brownlee and Ross were
particularly prolific, so I've left out several of their incremental works.
Work done in the US and England are color-coded accordingly. Clicking on
most nodes will take you to the original source, when available.
For a more detailed review, you can start with Serfling's excellent review article.
If you're interested in any of these articles, but having trouble getting
a copy, feel free to contact me and I might be able to help.
Also, Martini's work does not appear to be available in English, so it would be nice to hear a review from somebody.