It was my first experience of the collaboration with other research institute. I worked in IMATI/GE-CNR for two months (June-July 2005) but it was enough to understand if I was on the right way of the research line of my recently started PhD program. Together with people from IMATI we discussed general ideas of the research as well as the details of the implementation of the elaborated algorithm.

During my stage in IMATI I encountered people with whom it is interesting to work and to spend free time together. I am very grateful to them for the useful advices and support they continue to give me.