5 links
Henri Poincare
-chaos.umd.edu
Concise biography noting this thinker's seminal importance for chaos theory.
Jules Henri Poincaré
iep.utm.edu
Scholarly study of his life and thought by Mauro Murzi. From the Internet Encyclopedia of Philosophy.
The Relativity of Space
marxists.org
Full text of Poincare's 1897 popular explanation of his conception of space.
World of Scientific Biography: Poincaré, Henri
scienceworld.wolfram.com
Concise biography with links to related topics.