When the painting "The Assault" – a central work in Stockholm University's art collection, – was examined to see if it was really created by Flemish Renaissance painter Pieter Bruegel the Elder, or by his son Pieter Brueghel the Younger, students studying the International Master's Programme in Art History: Technical Art History and the Art Museum, at Stockholm University were invited to take part in the study for educational purposes.

Was "The Assault" painted in Bruegel
Was "The Assault" painted in Bruegel's atelier?

The painting was donated to the University in 1884 and the work was at that time signed by Pieter Breughel the Younger, 1630. In the 1970s, however, another signature was found which indicated that it was Bruegel the Elder, and that the second year was in 1567 instead of 1630.