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- See my Alexis Fontaine's “Fluxio-differential Method” and the Origins of the Calculus of Several Variables Annals of Science 1981 38 251 290 my ‘Alexis Fontaine's Integration of Ordinary Differential Equations and the Origins of the Calculus of Several Variables’, Annals of Science, 39 (1982), 1–36; and my ‘Alexis Fontaine's Route to the Calculus of Several Variables’, Historia Mathematica, 11 (1984), 22–38.
- Engelsman , S.B. 1980 . Lagrange's Early Contributions to the Theory of First-Order Partial Differential Equations . Historia Mathematica , 7 : 7 – 23 .
- Lagrange , J.-L. 1785 . “ Méthode générale pour intégrer les équations aux différences partielles du premier ordre, lorsque ces différences ne sont que linéaires ” . In Nouveaux Mémoires de l'Académie Royale des Sciences et Belles-Lettres de Berlin 174 – 190 . publ. 1787 (p. 185)
Annals of Science
Volume 42, 1985 - Issue 4