1. ISO/TR 9824-1: Measurement of liquid flow in open channels. Part 11:Free surface flow in closed conduits. Part11A: Methods of measurement. ISO (1990)
2. ISO/TR 9824-1: Measurement of liquid flow in open channels. Part 11:Free surface flow in closed conduits. Part11B: Specification for performance and installation of equipment for measurement of free surface flow in closed conduits. ISO (1990)
3. Godley, A.: Flow measurement in partially closed conduits, Flow Measurement and Instrumentation 13(5-6), 197–201 (2002)
4. ABB Inc: Electromagnetic Flowmeter for Full Pipe and Partially Full Pipelines (2001)
5. Krohne Inc.: Electromagnetic flowmeter in partially filled pipes for water and waste water (2002)