H. Gill
- The Sale of Water by Meter in Berlin. Dans: Minutes of the Proceedings of the Institution of Civil Engineers, v. 107, n. 1892-1 ( 1892). (1892):
- The Filtration of the Muggel Lake Water-Supply, Berlin. Dans: Minutes of the Proceedings of the Institution of Civil Engineers, v. 119, n. 1895-1 ( 1895). (1895):