1. Aini, N. 2011. Trade barriers in forest industry between Malaysia and Europe. Environmental and Society. AgroParisTech; CIRAD. Retrieved from, https://tel.archives-ouvertes.fr/pastel-00750922/document. Accessed 24 June 2012.
2. Aisbett, E., and L.M. Pearson. 2012. Environmental and health protections, or new protectionism? Determinants of SPS notifications by WTO members. School Research Paper, 12–13. Canberra: Crawford School of Public Policy. Retrieved from https://crawford.anu.edu.au/publication/crawford-schoolworking-papers/9840/environmental-and-health-protections-or-new. Accessed 24 Mar 2015.
3. Andriamananjara, S., M. Ferrantino, and M. Tsingas. 2003. Alternative approaches in estimating the economic effects of non-tariff measures: Results from newly quantified measures. Working Paper No.2003–12.C, Washington, DC: U.S International Trade Commission. Retrieved from https://www.usitc.gov/publications/332/ec200312c.pdf. Accessed 24 Mar 2015.
4. Andriamananjara, S., J. Dean, R. Feinberg, M. Ferrantino, R. Ludema, R., and M. Tsingas. 2004. The effects of non-tariff measures on prices, trade and welfare: CGE implementation of policy-based price comparisons. US International Trade Commission, Office of Economics Working Paper No. 2044-04-A. Retrieved from, https://www.usitc.gov/publications/332/ec200404a.pdf. Accessed 24 June 2012.
5. Athukorala, P., and S. Jayasuriya. 2003. Food safety issues, trade and WTO rules: A developing country perspective. World Economy 26 (9): 1395–1416.