Ancient Greek Scientists: Xenocrates of Chalcedon
Notes on his life and mathematical achievements.
Biography.com: Xenocrates
Concise paragraph on his teachings.
Columbia Encyclopedia: Xenocrates
Concise paragraph on this early scholarch.
FOLDOC: Xenocrates
Entry from the philosophical database, with links to related entries.
Life of Xenocrates
Section from the Lives of the Philosophers, as compiled by Diogenes Laertius and translated by C.D. Yonge.
MacTutor History of Mathematics: Xenocrates of Ch
Biography, bibliography and list of related topics.
Xenocrates
A detailed article by Russell Dancy on this thinker's life and teachings. From the Stanford Encyclopedia of Philosophy.