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Edgar, Graham K and Foster, D H and Honan, W P and Heron, J R and Snelgar, R S (1989) Impaired Temporal Modulation Sensitivity at Localized Retinal Sites in Demyelinating Disease. In: Seeing Contour and Colour. Vision and Visual Health Care, 3 (3). Pergamon Press, Oxford, p. 410. ISBN 0080361366
Edgar, Graham K and Smith, Andrew T (1989) Hemifield differences in perceived spatial frequency. Perception, 19 (6). pp. 759-766.
Honan, W P and Heron, J R and Foster, D H and Edgar, Graham K and Scase, M O and Collins, M F (1989) Visual loss in multiple sclerosis and its relation to previous optic neuritis, disease duration and clinical classification. Brain, 113 (4). pp. 975-987.
Shucksmith, D M and Bryden, J and Rosenthall, P and Short, Christopher J and Winter, D M (1989) Pluriactivity, Farm Structures and Rural Change. Journal of Agricultural Economics, 40 (3). pp. 345-360. ISSN 0021857X