Stephen B. Blumenfeld and Aaron Crawford and Andres G. Victorio, Union Membership with Import Liberalization. journal = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology. July 2009, vol. 31(7). 1571 - 1575 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/12958.