1. Artige L, Nicolini R (2006) Labor productivity in Europe: evidence from a sample of regions. CREPP Working Papers 2006/08. http://www2.ulg.ac.be/crepp/papers/crepp-wp200608.pdf . Accessed 26 Sept 2017
2. Chen D (2015) China aims to set the regional cooperation agenda. East Asia Forum. http://www.eastasiaforum.org/2015/07/28/china-aims-to-set-the-regional-cooperation-agenda/ . Accessed 6 Sept 2017
3. Chen N (2017) Speeding up energy trade in the Belt and Road Initiative, 13 May, CNPC News. http://news.cnpc.com.cn/system/2017/05/13/001646509.shtml . Accessed 26 Sept 2017
4. Council of the European Union (1986) The Single European Act. 17 February 1986
5. Downs E (2015) Mission mostly accomplished: China’s energy trade and investment along the Silk Road Economic Belt. China Brief 15,6