Competition and Physician Behaviour: Does the Competitive Environment Affect the Propensity to Issue Sickness Certificates?
Kurt Brekke, Tor Helge Holmas, Karin Monstad, Odd Rune Straume
Journal Of Health Economics, vol. 66, 2019, p. 117-135.

Socio-economic status and physicians' treatment decisions.
Kurt Brekke, Tor Helge Holmas, Karin Monstad, Odd Rune Straume
Health Economics, vol. 27, 2018, p. e77-e89.

Do Treatment Decisions Depend on Physicians' Financial Incentives?
Kurt Brekke, Tor Helge Holmas, Karin Monstad, Odd Rune Straume
Journal of Public Economics, vol. 155, 2017, p. 74-92.