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JFM 10.0363.04

Nicholson J.-W. [1883] The multisection of angles. A. 10, 41-43.
JFM 15.0540.04

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Article

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Article

Scheffer J. [1879] On the trisection of an angle. A. 6, 117-119.
JFM 11.0375.03

Teixeira A.-J. [1858] Trisecçao de angulo pornecio da hyperbole e circulo. Interprotacão de una solução entranha. I.C. 6, 121-124.

Toscani C. [1852] Sopra un teorema di geometria. A.S.M.F. 3, 276-278.