Elements of Non-Euclidean geometry ...

Mode of access: Internet.

The elements of non-Euclidean geometry,

Mode of access: Internet.

La geometria non-euclidea : esposizione storico-critica del suo sviluppo.

Available on demand as hard copy or computer file from Cornell University Library.

Über die Picard'schen gruppen aus dem zahlkörper der dritten und der vierten einheitswurzel ...

Available on demand as hard copy or computer file from Cornell University Library.

Die nicht-euklidischen Raumformen in analytischer Behandlung,

Available on demand as hard copy or computer file from Cornell University Library.

Il parallelismo de Clifford negli spazii ellittici.

"Estratto dagli Annali della R. Scuola Normale Superiore di Pisa, v. 9."

Le divisioni regolari dello spazio iperbolico in piramide e doppie piramidi.

"Tesi di abilitazione."

Nichteuklidische Geometrie,

Available on demand as hard copy or computer file from Cornell University Library.

Synthetische Theorie der Cliffordschen Parallelen und der linearen Linienörter des elliptischen Raumes.

Available on demand as hard copy or computer file from Cornell University Library.

Elemente der absoluten Geometrie.

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The Boston colloquium. Lectures on mathematics delivered from September 2 to 5, 1903, before members of the American Mathematical Society in connection with the summer meeting held at the Massachusetts Institute of Technology, Boston, Mass.,

"Bibliography of memoirs relating to algebraic continued fractions": p. 167-187.

Urkunden zur Geschichte der nichteuklidischen Geometrie

Ceased publication with v. 2?

Théorie géométrique des engrenages : destinés à transmettre le mouvement de rotation entre deux axes situés ou non situés dans un même plan /

Mode of access: Internet.