Margulis AV, Houben E, Hallas J, Overbeek JA, Pottegard A, Torp-Pedersen T, Perez-Gutthann S, Arana A. Ophthalmic nepafenac use in the Netherlands and Denmark. Acta Ophthalmol. 2017 Aug;95(5):509-17. doi: 10.1111/aos.13468
Wilson MR, Van Houtven CH, Stearns S, Clipp EC. Depression and missed work among informal caregivers of older individuals with dementia. J Fam Econ Issues. 2007;28(4):684-98.
Phanikumar CV, Maitra B. Modeling willingness-to-pay values for rural bus attributes under different trip purposes. JTRF. 2006;45(2):31-44. doi: 10.22004/ag.econ.206787