J. A. Purves
- Improvements in Dioptric Apparatus for Lighthouses. Dans: Minutes of the Proceedings of the Institution of Civil Engineers, v. 137, n. 1899-3 ( 1899). (1899):
- Equiangular Prisms. Dans: Minutes of the Proceedings of the Institution of Civil Engineers, v. 128, n. 1897-2 ( 1897). (1897):