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Zhang HT (2009). "Cyclic AMP-specific phosphodiesterase-4 as a target for the development of antidepressant drugs". Current Pharmaceutical Design. 15 (14): 1688–98. doi:10.2174/138161209788168092. PMID19442182.
Steele MR, McCahill A, Thompson DS, MacKenzie C, Isaacs NW, Houslay MD, Bolger GB (Jul 2001). "Identification of a surface on the beta-propeller protein RACK1 that interacts with the cAMP-specific phosphodiesterase PDE4D5". Cellular Signalling. 13 (7): 507–13. doi:10.1016/S0898-6568(01)00167-X. PMID11516626.
Zhang HT (2009). "Cyclic AMP-specific phosphodiesterase-4 as a target for the development of antidepressant drugs". Current Pharmaceutical Design. 15 (14): 1688–98. doi:10.2174/138161209788168092. PMID19442182.