@Misc{BVMC:695846, author = {Euler, Leonhard}, title = {Methodus inveniendi lineas curvas ... sive Solutio problematis isoperimetrici ...}, url = {https://www.cervantesvirtual.com/obra/methodus-inveniendi-lineas-curvas--sive-solutio-problematis-isoperimetrici-} }