Conferences

1. “On Determining the Higher Commutator Operation in Certain Classes of Expanded Groups”  AAA 79, 12.-14. February 2010. Olomouc, Czech Republic (joint work with: E. Aichinger) 
2. “Higher commutators and multilinear expanded groups” 21st International Conference on Near-rings, Near-fields and related topics, 26. July – 1. August 2009. Vorau, Austria (joint work with: E. Aichinger) http://nearrings09.asc.tuwien.ac.at/
3. “Some Applications of Higher Commutators in Mal’cev Algebras“ 12th Serbian Mathematical Congres, 28. August – 2. September 2008. Novi Sad, Serbia (joint work with: E. Aichinger) sites.dmi.rs/events/2008/smkongres
4. “Two Problems for Nilpotent – Supernilpotent Algebras” AAA 76, 22.-25. May 2008. Linz, Austria (joint work with: E. Aichinger) http://www.algebra.uni-linz.ac.at/AAA76/
5. “Higher commutators - properties and applications” Algorithmic complexity and universal algebra, 16.-20. July 2007. Szeged, Hungary (joint work with: E. Aichinger) http://www.math.u-szeged.hu/confer/algebra/
6. “Higher commutators in Mal’cev algebras: properties and applications” AAA 74, 7.-10. June 2007. Tampere, Finland (joint work with: E. Aichinger) http://math.tut.fi/aaa74/
7. “Modular Lattices With Adjacent Projective Meet Irreducible Elements”      International Conference on Lattice Theory in honor of the 70th birthday of George Grätzer and E. Tamás Schmidt, 6.-9. June 2006. Budapest, Hungary (joint work with: E. Aichinger) http://www.renyi.hu/conferences/2006/grasch.html
8. “Some Results on Endomorphism Monoids of Countable Homogeneous Graphs” Logic Colloquium, 25.-31. July 2004. Torino, Italy (joint work woth: I. Dolinka) http://lc2004.unito.it/
9.  “Undecidability of Automorphism Groups of Countable Homogeneous Graphs” 67th Workshop on General Algebra / 19th Conference for Young Algebraists, 26.-28. March 2004. Potsdam, Germany (joint work with: I. Dolinka)

Invited Talks

1. “Higher commutators in Mal’cev algebras: properties and applications” Wiener Algebra Seminar (WAS), 24. August 2007. Vienna, Austria (joint work with: E. Aichinger) http://www.dmg.tuwien.ac.at/fg1/seminar.html
2. “Do the functions that preserve the higher commutators of a Mal’cev algebra form a clone?” Wiener Algebra Seminar (WAS), 20. June 2008. Vienna, Austria (joint work with E. Aichinger) http://www.dmg.tuwien.ac.at/fg1/seminar.html