Colin, Lizieri, Stephen, Satchell and Qi, Zhang (2007) The underlying return-generating factors for REIT returns: An application of independent component analysis. Real Estate Economics, 35 (4). pp. 569-598. ISSN 1080-8620 (Print), 1540-6229 (Online) (doi:10.1111/j.1540-6229.2007.00201.x)