René Dugas: A History of Mechanics, 1955, 1988, p.219 - 221
Leibniz´ egne to artikler:
A short demonstration of a famous error of Descartes and other learned men, concerning the natural law according to which God always
preserves the same quantity; a law which they use incorrectly, even in mechanics.
Acta Eruditorum, Leipzig, 1686.
Specimen dynanicum, 1695.