:MAURER, Rainer. OLS-Estimation of Conditional and Unconditional Sigma- and Beta-Convergence of Per Capita Income : Implications of Solow-Swan and Ramsey-Cass Models. Kiel : Institut für Weltwirtschaft, 1995. 16 s. Kiel Working Paper, No.698. [Copy count : 1, currently available 1, at library only 0]