1. Yang, Shao-Hua, Bi, Xiao-Jun, Xie, Yan, Zhang, Qin, Sun, Dong-Xiao. 2015. Validation of PDE9A Gene Identified in GWAS Showing Strong Association with Milk Production Traits in Chinese Holstein. In International journal of molecular sciences, 16, 26530-42. doi:10.3390/ijms161125976. https://pubmed.ncbi.nlm.nih.gov/26556348/
2. Susmi, Tasmina Ferdous, Rahman, Atikur, Khan, Md Moshiur Rahman, Batiha, Gaber El-Saber, Hossain, Mohammad Uzzal. 2021. Prognostic and clinicopathological insights of phosphodiesterase 9A gene as novel biomarker in human colorectal cancer. In BMC cancer, 21, 577. doi:10.1186/s12885-021-08332-3. https://pubmed.ncbi.nlm.nih.gov/34016083/
3. Ceddia, Ryan P, Liu, Dianxin, Shi, Fubiao, Kass, David A, Collins, Sheila. 2021. Increased Energy Expenditure and Protection From Diet-Induced Obesity in Mice Lacking the cGMP-Specific Phosphodiesterase PDE9. In Diabetes, 70, 2823-2836. doi:10.2337/db21-0100. https://pubmed.ncbi.nlm.nih.gov/34620617/
4. Li, Jianzhen, Bai, Lin, Liu, Zhiquan, Wang, Wenyi. 2020. Dual roles of PDE9a in meiotic maturation of zebrafish oocytes. In Biochemical and biophysical research communications, 532, 40-46. doi:10.1016/j.bbrc.2020.08.005. https://pubmed.ncbi.nlm.nih.gov/32826058/
5. Wang, Pan-Xia, Li, Zhuo-Ming, Cai, Si-Dong, Chen, Shao-Rui, Liu, Pei-Qing. 2017. C33(S), a novel PDE9A inhibitor, protects against rat cardiac hypertrophy through upregulating cGMP signaling. In Acta pharmacologica Sinica, 38, 1257-1268. doi:10.1038/aps.2017.38. https://pubmed.ncbi.nlm.nih.gov/28649129/
6. Patel, Neema S, Klett, Jennifer, Pilarzyk, Katy, Menniti, Frank S, Kelly, Michy P. 2018. Identification of new PDE9A isoforms and how their expression and subcellular compartmentalization in the brain change across the life span. In Neurobiology of aging, 65, 217-234. doi:10.1016/j.neurobiolaging.2018.01.019. https://pubmed.ncbi.nlm.nih.gov/29505961/