Reynders, L. (2015). Continuous Professional Development, it's all in the game. A series of studies on different perspectives for continuous professional development (CPD) of teachers. PhD thesis. Heerlen: Open University. (Promovendus)

Kang, S.J. (2015). Leadership, organizational culture, knowledge productivity and value creation in four successful Korean companies. Thesis. Enschede: University of Twente (Promovendus)

Stam, Christiaan (2007): Knowledge Productivity. PhD thesis. Enschede: Twente University (Promovendus)

Scholten, Astrid (2007). Exploration of portfolio characteristics for the recognition of prior learning (Promovendus)