Wolfram Research
Wolfram Math World: Clairaut's Difference Equation
This page from Mathworld.com gives a very brief statement of Alexis Claude Clairaut's Difference Equation, also called Clairaut's Differential Equation. (This equation is a special case of Lagrange's Equation.) Includes special links.
Trinity College Dublin
Trinity College: Alexis Claude Clairaut (1713 1765)
Information on the mathematical achievements of Alexis Claude Clairaut as well as some biographical information.
University of St. Andrews (UK)
University of St. Andrews: Alexis Claude Clairaut
Contains a lengthy and detailed biography of Alexis Claude Clairaut including information on his relationships to other mathematicians of his day.
Wikimedia
Wikipedia: Alexis Clairaut
This site from Wikipedia provides a concise biography on mathematician Alexis Claude Clairaut (1713-1765 CE) gives an overview of his accomplishments. Links are also provided for additional information.
Curated OER
Smithsonian Libraries: Scientific Identity: Alexis Claude Clairaut (1713 1765)
A portrait of Alexis Claude Clairaut from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.