Kivedal, Bjørnar Karlsen, and Trond Arne Borgersen. “Commercial Real Estate at the ZLB: Investment Demand and CAPM-WACC Invariance”. Nordic Journal of Surveying and Real Estate Research 13, no. 1 (June 13, 2018): 32-53. Accessed August 9, 2020. https://journal.fi/njs/article/view/68989.