- A New Control Relay for Automatic Transfer of Supplies for Signalling Applications,
D.M. Van de Sype, P. Hayt and S. Thiim
Paper 21.275 from CCP: 104, ISBN 978-1-905088-59-1 (2014)
- An Optimized Supply System for Electronic Signalling Applications,
D.M. Van de Sype and P. Hayt
Paper 21.276 from CCP: 104, ISBN 978-1-905088-59-1 (2014)