8Leyshon A, Thrift N. Financial exclusion and the shifting boundaries of the financial system [-J~. Environment and Planning A, 1996, (07).
9Aghion P, Harris. C, Howitt. P, Vickers. J. Compe- tition, imitation and growth with step--by--step innovation [J]. Review of Economic Studies, 2009, (03).
10Acemoglu D, Aghion P, Zilibotti. F. Distanee to Frontier, selection, and economic growth [J]. Journal of the European Economic Association, 2006, (01).
