Rudnicka, AR; Frost, C; Owen, CG; Edgar, DF; (2001) Nonlinear behavior of certain optic nerve head parameters and their determinants in normal subjects. Ophthalmology, 108 (12). pp. 2358-68. ISSN 0161-6420 https://researchonline.lshtm.ac.uk/id/eprint/16976 Full text not available from this repository.