On differential equations of the second degree
According to Jacobi, a treatise with this title was read to the Berlin Academy on December 16, 1756. According to St. Petersburg Academy records, it was presented to that Academy on January 13, 1757.
Euler considers the integration of second-order differential equations using the method of integrating factors.
Original Source Citation
Novi Commentarii academiae scientiarum Petropolitanae, Volume 7, pp. 163-202.
Opera Omnia Citation
Series 1, Volume 22, pp.295-333.