1. Crawford J (2007) The creation of states, 2nd edn. Clarendon Press, Oxford
2. Fastenrath U (2012) Article 4. In: Simma B et al (eds) The Charter of the United Nations. A commentary, 3rd edn. Oxford University Press, Oxford, pp 341–361
3. Franck TM (1990) The power of legitimacy among nations. Oxford University Press, Oxford
4. Grant TD (1999) Defining statehood: the Montevideo Convention and its discontens. Columbia J Transnl Law 37:403–457
5. Grant TD (2014) Doctrines. In: Wolfrum R (ed) Max Planck Encyclopedia of Public International Law.
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