**
9** | On the shortest line joining two points on a surface |

**27** | On isoperimetric problems in the widest sense |

**42** | On the curve of fastest descent in whatever resistent medium |

**56** | New and easy method of finding curves enjoying a maximal or minimal property |

**65** | A method for finding curved lines enjoying properties of maximum or minimum, or solution of isoperimetric problems in the broadest accepted sense |

**84** | Observation by Leonhard Euler on sections 83 and following of the preceding book, concerning elastic curves |

**99** | The solution to a certain problem proposed by the celebrated Daniel Bernoulli |

**250** | A method for finding infinitely many isoperimetric curves predicated with a common property |

**296** | The Elements of the Calculus of Variations |

**297** | Explanation of the analytical method in the maxima and minima |

**
420** | A new and easy method for treating the calculus of variations |

**444** | On the most rapid (descending) motion of weights along curves of a specified type |

**501** | Considerations about brachistochrones |

**727** | A more accurate treatment of the problem of drawing the shortest line on a surface |

**731** | The solution of a memorable problem by a special artifice of calculation |

**735** | On an outstanding paradox, which occurs in the analysis of maximums and minimums |

**740** | De lineis curvis non in eodem plano sitis, quae maximi minimive proprietate sunt praeditae |

**759** | A more accurate investigation into brachistochrones |

**760** | De vera brachystochrona seu linea celerrimi descensus in medio resistente |

**761** | De brachystochrona in medio resistente, dum corpus ad centrum virium utunque attrahitur |