Nitra 2003, Privet (Ligustrum).
EBA Congress, Ksiaz 2006, European Cornel (Kornus mas).
With Salvatore Liporace.
Nitra 2007, Apple (Malus halliana).
Nitra 2007, Field maple (Acer campestre).
Alitus 2007, European Cornel (Kornus mas).
EBA Congress, Wien 2008, European Cornel (Kornus mas).
And Walter Pall.