46
by Izvorski, Ivailo
Published 2008
World Bank

49
by Vaillancourt, François
Published 2006
World Bank

50
by Shah, Anwar
Published 2006
World Bank

52
by Thirsk, Wayne R.
Published 1997
World Bank

53
by Freinkman, Lev M.
Published 2003
World Bank

60
by Shah, Anwar
Published 2007
World Bank