Chapter V. Manuscripts of the period 1676, 1677, and a later undated manuscript, in The early mathematical manuscripts of Leibniz, translated from the Latin texts published by Carl Immanuel Gerhardt, with critical and historical notes, by J.M. Child, (Open Court, 1920. Dover, 2005). pp. 115-158.
Leibniz, Gottfried Wilhelm, "Manuscripts of the period 1676, 1677, and a later undated manuscript" (1676). 2015, October 16-17 ORESME Reading Group Meeting. 3.
From: Leibniz, Gottfried W, and J M. Child. The Early Mathematical Manuscripts of Leibniz. Mineola, N.Y: Dover Publications, 2005. Print.