Alkmaion
- Very concise list of known facts about this early Greek thinker. Includes a chronological table placing him in historic context.
- http://www.swan.ac.uk/classics/staff/ter/grst/People/Alkmaion.htm

Alcmaeon of Croton
- Life and work of early Greek medical writer and philosopher-scientist; from the Stanford Encyclopedia by Carl Huffman.
- http://plato.stanford.edu/entries/alcmaeon/