How preschool children used a behaviour-based programming tool. - Mikael Kindborg; Per Sökjer (IDC, 2007)

Interaction designers' use of their repertoire in meetings with clients. - Per Sökjer (BCS HCI (2), 2007)

Where all the interaction is: sketching in interaction design as an embodied practice. - Jakob Tholander; Klas Karlgren; Robert Ramberg; Per Sökjer (Conference on Designing Interactive Systems, 2008)