1. On mapping preserving quasi-autoparallel curves, Semester on Differential Geometry, November 19-23, 1979, Banach Institut, Warsawa.
2.  On quasi-autoparallel curves in tensorially connected spaces, Colloquium on Differential Geometry, Budapest, 1979.
3. A remark on geodesic mappings of Finsler space, The third national seminar on Finsler spaces, Braşov, 1984.
4. Geodesic mappings of recurrent Finsler spaces, Colloquium on Differential Geometry, Odessa, 1984.
5. Geodesic mappings of Finsler spaces of scalar and constant curvature, Colloquium on Differential Geometry, Debrecen-Hajdúszoboszló, 1984.
6. On the special Finsler metrics, VII Tagung der Fachsection Geometrie, Dresden, 1988.
7. Note on the geodetic mappings of Finsler spaces, The fifth national seminar of Finsler and Lagrange spaces, Braşov, 1988.
8. On the special Finsler spaces, University of Timisoara, 1990.
9. A note for horomorph-projective mappings of Kähler spaces, 6. Österreichische-Ungarische Geometrietagung, 1990, Leibnitz-Seggan.
10. Special Finsler spaces in geodesic correspondence, Conference on Finlser Geometry and its Applications to Physics and Control Theory. August 26-31, 1991, Debrecen.
11. E1-flat mappings, International Conference on Differential Geometry and its Applications, July 28, 1992, Bucharest.
12. On special Finsler spaces, Symposium János Bolyai, 1992, Marosvásárhely.
13. Finsler spaces with common geodesics, 7. ungarisch-österrichisches Geometrie-Symposium, 1992, Leibnitz-Seggan.
14. A tudományegyetemeken bevezetett egyszakos matematika tanárképzésről, 32. Rátz László vándorgyűlés, 1992, Zalaegerszeg.
15. Speciális Finsler metrikák, Moór Arthur emlékülés, 1993, Sopron.
16. Projective changes between Finsler spaces with (?,?)-metric, XIII. Österreichischer Matematikerkongress, 1993, Linz.
17. On some special Finsler spaces, Konstruktive Geometrie, 1993, Balatonföldvár.
18. Landsberg spaces with common geodesics, Colloquium on Differential Geometry, 1994, Debrecen.
19. On Landsberg spaces with vanishing Douglas tensor, 3rd International Conference on Differential Geometry and its Applications, 1994, Athens.
20. On a geometrical problem in a special Finsler space, International Geometrietagung, 1994, Schloss Új Ebergényi.
21. Randers and Kropina spaces in geodesic correspondence, Kroatisch-Österreichisches Geometrie-Symposium, 1994, Leoben.
22. On special Finsler spaces, Welttagung über Geometrie, 1995, Leibnitz-Seggauberg.
23. Randers and Kropina spaces in geodesic correspondence, Konstruktive Geometrie, 1995, Balatonföldvár.
24. Konception der Ausbildung der Lehrer für darstellende Geometrie, IV. General Polish Seminary ”Geometry and Computer”, 1995, Wisla.
25. Reductions theorems of certain Landsberg spaces to Berwald spaces, Conference on Differential Geometry, 1996, Budapest.
26. Conception of Teacher’s Training for Descriptive Geometry, The seventh International Conference on Engineering Computer Graphics and Descriptive Geometry, 1996, Cracow.
27. On some special Finsler metrics, Conference on Geometry and Advanced Robot Kinematics, 1996, Berghof.
28. Zyklographie, Technische Universität, Wien, Januar 1997, Gastprofessor.
29. Finsler spaces of Douglas type, 32nd Symposium on Finsler Geometry, 1997, Kyoto-Ise.
30. Remarks on geodesic mappings of special Finsler space, 32nd Symposium on Finsler Geometry, 1997, Kyoto-Ise.
31. Finsler spaces with vanishing Douglas tensor, Olomouc University, 1998, Olomouc.
32. Transzformációcsoportok, CEEPUS együttműködés, 1998. november, Kolozsvár.
33. On geodesic mappings of special Finsler spaces, the 18th Winter School ”Geometry and Physics”, Srní, 1998.
34. On Finsler spaces of Douglas type, The International Conference on Finsler and Lagrange Geometry and its Applications, 1998, Edmonton.
35. On the rectifiability of ODE, The 19th Winter School ”Geometry and Physics”, Srní, 1999.
36. Workshop  on Differential Geometric Methods in Theoretical Mechanics, Eger-Noszvaj, August 20-26, 1999. On Finsler spaces of Douglas type.
37. Symposium der Darstellende Geometrie, Dresden, 15-17. June, 2000.  Über eine Projektivmetrik von P. Funk.
38. 3rd  Seminar on Geometry and Graphics in teaching Contemporary Engineer, Wisla 19-21, June, 2000. On the rectifiability condition of second order ordinary differential equations.
39. Colloquium on Differential Geometry, Debrecen, 25-30 July, 2000. Randers spaces with h-curvature tensor H-dependent on position alone.
40. Technical University Muenchen, 26 October - 6 November, 2000. On Funk and Hilbert metrics
41. Montanuniversitat Leoben, 2 April, 2001. Neue Resultate zur Finsler Geometrie.
42. Technische Universitat Wien, 6 June, 2001. Douglas spaces.
43. Conference on Finsler and Lagrange Geometry, Iasi, Romania, 26-30 August, 2001. Projectively flat Kropina spaces.
44. Technische Universitat Dresden, Institute für Geometrie, 16 November, 2001. Second order ordinary differential equation ond the Finsler geometry (probable applications in Biology).
45. Finsler Geometry Workshop, Mathematical Sciences Research Institute at Berkeley, USA. 3-7 June, 2002. Projective Finsler Geometry.
46. 33rd European Conference on Mathematical Psychology, 21-24 August, 2002. On some special Finsler metrics.
47. BMGE, Geometriai Tanszék, 2002. szeptember 6. On projective and conformal Finsler geometry.
48. János Bolyai Conference on Hyperbolic Geometry, Budapest, 2002. July 8-12. On the rectifiability condition of a second order ordinary differential equation.
49.  University of Debrecen, Seminar of Institute of Informatics and Mathematics,  May 9, 2002. Douglas spaces.                                                                                           

50.  Workshop on Finsler Geometry and its Applications August 11-15, 2003, Debrecen, Hungary. Reduction theorems of certain Douglas spaces to Berwald spaces