Managing Public Expenditure: A Reference Book for Transition Countries (Sigma/OECD, 2001) Sigma Paper No. 19: Effects of European Union Accession: Part I Budgeting and Financial Control (1998) Sigma Paper No. 20: Effects of European Union Accession: Part II External Audit (1998) Sigma Paper No. 26: Sustainable Institutions for European Union Membership (1998) Sigma Paper No. 35: Co-ordination at the Centre of Government: The Functions and Organisation of the Government Office (2004)