by Cook, J.M., Gardner, M.J., Griffiths, A.H., Jessep, M.A., Ravenscroft, J.E., Yates, R.
Published in Marine pollution bulletin (01.08.1997)

by DOBSON, J. E, GARDNER, M. J, GRIFFITHS, A. H, JESSEP, M. A, RAVENSCROFT, J. E
Published in Accreditation and quality assurance (01.09.1997)

by Gardner, Mike J., Dobson, Judy E., Griffiths, Andy H., Jessep, Mike A., Ravenscroft, Jim E.
Published in Marine pollution bulletin (01.01.1997)