1- Becker,G. (1958), competition and Democracy, Journal of Law & E conomics, 1, 105
2- Briassoulis, H. (2019), Governance as Multiplicity, Spring science, Business Media, LLC.
3- Chatwin, M. , Arku.G and cleave, E. (2019), Defining Subnational open government, Springer science, Buisiness Media LLC.
4- Dhal, R. (1989), Democracy and its crities, New Heaven, Yale university Press.
5- Dhal, R. (2006), on Political Equality, New Heaven and London, yale university press.
6- Druckman, J.N. and Lupia, A. (2016), Prefrence change in competitive political enviriments, Annual Review of political science, 19, 13.
7- Jacobson, G. (2019), How do different sources of policy analysis affect policy preferences, Springer science, Buisiness Media LLC.
8- Niessen, C. (2019), when citizen deliberation enters real politics, Spriner science, Buisiness Media LLC.
9- OECD (2005), Modernizing Government: the way forward, paris: OECD Publishing.
10- Shorp, T. (2005), Wars, Presidents and Punctuated equilibrium in u.s. defense spending, springer science, Buisiness Media LLC.
11- Skogstand, G. and Wilder M. (2019), Strangers at the gate: The role of multidimensional ideas, policy anomelies and institutional gatekeepers in biofuel policy developments in the U.S.A. and the E.U. , springer science, Business media, LLC.
12- Strak, A. (2019), Policy learning and public policy, springer science, Buisiness media, LLC.
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