Fan W, Nittala MG, Wykoff CC, Brown DM, Uji A, Hemert JV, Fleming A, Robertson G, Sadda SR, Ip M. New biomarker quantifying the effect of anti-vegf therapy in eyes with proliferative diabetic retinopathy on ultra-wide field fluorescein angiography: recovery study. Retina - J Ret Vit Dis. 2022 Mar 1;42(3):426-33. doi: 10.1097/IAE.0000000000003358
Smith VK, Evans MF, Banzhaf HS, Poulos C. Can weak substitution be rehabilitated? Environ Resour Econ (Dordr). 2010 Feb 1;45(2):203-21.
Mansfield CA. Despairing over disparities: an empirical analysis of the relationship between willingness-to-pay and willingness-to-accept. Environ Resour Econ (Dordr). 1999;13(2):219-34.