MAIN PUBLICATIONS:

1. T. Meressoo and O. Vaarmann. Numerical solution of certain decomposition-coordination problems in nonlinear programming. In: Symposium on Applied Mathematical Programming and Modeling. Volume of Extended Abstracts (ed.Istvan Maros), Budapest, Hungary, January 6-8, 1993, pp. 422-429.

2. O.Vaarmann. High order iterative methods for nonlinear equations. In: Operations Research´93 (Extended Abstracts of the 18th Symposium on Operations Research, September 1-3, 1993, Cologne), Physica-Verlag, Heidelberg, 1994, pp. 510-513.

3.O. Vaarmann. On solving ill-conditioned systems of nonlinear equations. Proc. Estonian Acad. Sci. Phys. Math., 1994, 43, Nr. 2, pp. 49-63.

4. O.Vaarmann. On solution of nonlinear least squares problems. In: Proc. of 14th International Conference on Multivariate Statistical Analysis MSA´95., Warsaw, December 7-8, 1995, pp.57-69.

5. O. Vaarmann. On high order iterative methods for nonliear problems. Preprints of Tallinn Technical University. B5, 1996, 41p.

6. O. Vaarmann. A class of rapidly convergent iterative methods for problems in mathematical programming. In: Inernationales Kolloquium über Anwendungen der Informatik und Mathematik in Architektur und Bauwesen-IKM, Bauhaus-Universität Weimar, 26.2-1.3.1997, 1997, paper Nr. 091 , 7p.

7. O Vaarmann. On solving large nonlinear optimization problems. In: Computer-Itensive Methods in Control and Data Processing. Can We Beat the Curse of Dimensionality (eds. J. Rojicek et al). Preprints of 3rd European IEEE Workshop CPM´98. Prague , Szech Republic, September 7-9, 1998, pp. 217-220.

8. O. Vaarmann. High order iterative methods for nonlinear problems. In: Nonlinear Mathematical Analysis and Applications.(ed. Themistokles M. Rassias), National Technical University of Athens, Greece, Dec.1998, pp.124-148.

9. O. Vaarmann. Some approximate methods for solving nonlinear ill-posed problems. Proc. Estonian Acad. Sci. Phys. Math., 1999, 48, Nr. 2, pp.146-151.

10. O. Vaarmann. Approximate methods for ill-posed optimization problems. In: Fourteenth Conference on Quantitative Methods for Decision Making. ORBEL 14, January 20-21, 2000, SOGESI-BVWB-MONS (Belgium), Book of Abstracts, pp.11-12.

11. O. Vaarmann. Approximate methods for unstable nonlinear optimization problems. In.: Internationales Kolloquium über Anwendungen der Informatik und Mathematik in Architectur und Bauwesen-IKM 2000, Bauhaus-Universität Weimar , 22.06-24.06.2000, Weimar, 2000, paper Nr. 054, 7p.

12. O. Vaarmann. Approximate methods for two-point boundary value problem. In: The Third International Conference DIFFERENTIAL EQUATIONS AND APPLICATIONS, Saint-Petersburg, State Technical University, June 12-17, 2000, 8p.