NOT AVAILABLE @ NSU - would have to be ordered using Interlibrary Loan:
Frost, R., & Gross, R. (1993). The hoarding of possessions. Behaviour Research And Therapy, 31(4), 367-381.
Frost, R., Krause, M., & Steketee, G. (1996). Hoarding and obsessive-compulsive symptoms. Behavior Modification, 20(1), 116-132.
Steketee, G., Frost, R. O., Tolin, D. F., & Brown, T. A. (2005, November). Is compulsive hoarding a subtype of OCD In Paper presented at the annual meeting of the Association for Behavioral and Cognitive Therapies, Washington, DC.
Tolin, D., Frost, R., Steketee, G., Gray, K., & Fitch, K. (2008). The economic and social burden of compulsive hoarding. Psychiatry Research, 160(2), 200-211.