Duncan Marshall/ Derek Worthing/ Nigel Dann/ Roger Heath
(3)
Duncan Marshall,Derek Worthing,Nigel (University of the West of England Dann UK),Roger (University of the West of England Heath UK)
(2)
Duncan (formerly of the University of the West of England Marshall UK),Nigel (University of the West of England Dann UK)
(1)
Duncan Fitz/ Thomas M. Sanderson (CON)/ Sung in Marshall (CON)
(1)