- 195–216;
Opera Omnia,
Series 1,
Volume 28, pp. 142–160. L. Euler, De
mensura angulorum solidorum, Acta
academiae scientiarum imperialis Petropolitinae 2, 1781...
- (1774). "Articulus II: De situ lineæ rectæ ad Circularem; & de
mensura angulorum,
quorum vertex non est in
circuli centro. §1. De situ lineæ rectæ ad Circularem...
- (ed.),
Harmonia Mensurarum, Sive
Analysis &
Synthesis per
Rationum &
Angulorum Mensuras (in Latin), Cambridge. For the
Cotes spirals, see pp. 30–35;...
- doi:10.1007/bf00181352. S2CID 120391200. Euler, Leonhard. "De
mensura angulorum solidorum".
Leonhardi Euleri Opera Omnia. 26: 204–223. Weisstein, Eric...
