on Friday, December 15th, at 12 o’clock in Auditorium A129, Chemicum, Kumpula, University of Helsinki. The opponent is Professor Keith Kuwata from Macalester College, USA, and the custos is Professor Theo Kurten from the University of Helsinki. The dissertation is also available in electronic form in Helda:(https://helda.helsinki.fi/items/a22e0965-1788-4383-b22b-8af767447789).