D. Altıntan, Ö. Uğur, Solution of Initial and Boundary Value Problems by the Variational Iteration Method, Journal of Computational and Applied Mathematics, 259(B), pp. 790-797, (March 2014).
A. İ. Çekiç and Ö. Uğur, Pricing Formulae for Constant Proportion Debt Obligation Notes: the Laplace Transform Technique, Journal of Computational and Applied Mathematics, 259(B), pp. 362-370, (March 2014).
D. Altıntan, Ö. Uğur, Generalisation of the Lagrange Multipliers for Variational Iterations Applied to Systems of Differential Equations, Mathematical and Computer Modelling, 54, pp. 2040-2050, (November 2011).
A. İ. Çekiç, R. Korn, Ö. Uğur, A Mean-Square Approach to Constant Proportion Debt Obligations, Wilmott Magazine, Issue 53, Technical Paper, (May 2011).
Re-printed in 2016.
D. Altıntan, Ö. Uğur, Variational Iteration Method for Sturm-Liouville Differential Equations, Computers & Mathematics with Applications, 58(2), pp. 322-328, (July 2009).