1. Softening paint and drip formation in paintings by Jean-Paul Riopelle (1923–2002): improving their condition with metal coordinating ions;Bronken,2014
2. Hard dry paint, softening tacky paint, and exuding drips on composition 1952;Bronken,2014
3. Conservation challenges and physical changes in Composition (1952) by Jean-Paul Riopelle: a case study;Bronken,2015
4. Asger Jorn The crucial years 1954–1964. A study of Asger Jorn's artistc development from 1954 to 1964 and a catalogue of his oil paintings from that period;Atkins,1977
5. Karel Appel The Early Years 1937–1957;Ragon,1988