3Aerts & Schmidt (2008) , "Two for the price of one? Additionality effects of R&D subsidies: A comparison between Flanders & Germany", Research Policy 37(5):806--822.
4Berger & Udell(1998), "The economics of smail business finance: The roles of private equity and debt markets in the financial growth cycle", Journal of Banking& Finance 22 (6--8) :613--673.
5Clausen, T. H. (2009), "Do subsidies have positive impacts on R&D & innovation activities at the firm level?" Structural Change & Economic Dynamics 20 (4): 239 -- 253.
6David, et al(2000), "Is public R&D a complement or substitute for private R&D? A review of the econometric evidence", Research Policy 29(4--5):497--529.
7Esty & Megginson (2003), "Creditor rights, enforcement, and debt ownership structure: Evidence from the global syndicated loan market", Journal of Financial & Quantitative Analysis 38(01) : 37- 60.
8Feldman & Kelley (2006), " The ex ante assessment of knowledge spillovers; Government R&D policy, economic incentives & private firm behavior", Research Policy 35 (10) : 1509 -- 1521.
9Georghiou, et a1(2003), "Raising EU R&D Intensity: Improving the effectiveness of public support mechanisms for private sector R&D: Direct measures", Commission of the European Communities, EUR20716 Website--www. euromaplive, iconinnovation. De/html/bodt--downloads. html.
10Hamberg, D. (1966), R& D: Essays on the Economics of Research & Development, Random House.