How do different eit routes from work affect older workers'' self-esteem? Trude Furunes, Reidar J. Mykletun and Per Erik Solem (2012) I De Wals, S. & Meszaros, K. (red.): Handbook on Psychology of Self-Esteem. New York: Nova Science Publishers, s. 325-337 ISBN 978-1-62100-410-3
Ageing and social participation. Solem, P.E. (2011) I Larsen, L. (red.): Geropsychology. The psychology of the ageing person. Århus: Aarhus University Press, s. 97-122 ISBN 978 87 7934 574 4