The first six books of the Elements of Euclid, and propositions I.-XXI. of book XI., and an appendix on the cylinder, sphere, cone, etc., with copious annotations and numerous exercises,

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Sur les équations aux dérivées partielles du type parabolique ...

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Les systèmes d'équations aux dérivées partielles,

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Vorlesungen über funktionstheorie.

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Elemente der Theorie der Funktionen einer komplexen veränderlichen grösse.

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Kurzgefasste vorlesungen über verschiedene gebiete der höheren mathematik mit berücksichtigung der anwendungen.

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Éléments de géométrie projective,

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I gruppi continui di trasformazioni. (Parte generale della teoria)

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Hauptsätze der Differential- und Integral-Rechnung, als Leitfaden zum Gebrauch bei Vorlesungen.

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Les origines de la statique,

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Principes de la théorie des fonctions entières d'ordre infini,

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Elementare theorie der analytischen functionen einer complexen veränderlichen.

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Theorie der Abelschen Functionen vom Geschlecht 3.

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Leçons sur le calcul des variations

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Exposition de la méthode des equipollences; traduit de l'italien,

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