Jiang, Zhaojian; Hu, Benrong; Wang, Jialing; Tang, Qiang; Tan, Yan; Xiang, Jizhou; Liu, Juyan. Effect of icariin on cyclic GMP levels and on the mRNA expression of cGMP-binding cGMP-specific phosphodiesterase (PDE5) in penile cavernosum. Journal of Huazhong University of Science and Technology. 2006, 26 (4): 460–2. PMID 17120748. doi:10.1007/s11596-006-0421-y.
Cartledge, J; Minhas, S; Eardley, I. The role of nitric oxide in penile erection.. Expert opinion on pharmacotherapy. 2001-01, 2 (1): 95–107. PMID 11336572. doi:10.1517/14656566.2.1.95.使用|accessdate=需要含有|url= (帮助)
Jiang, Zhaojian; Hu, Benrong; Wang, Jialing; Tang, Qiang; Tan, Yan; Xiang, Jizhou; Liu, Juyan. Effect of icariin on cyclic GMP levels and on the mRNA expression of cGMP-binding cGMP-specific phosphodiesterase (PDE5) in penile cavernosum. Journal of Huazhong University of Science and Technology. 2006, 26 (4): 460–2. PMID 17120748. doi:10.1007/s11596-006-0421-y.
Cartledge, J; Minhas, S; Eardley, I. The role of nitric oxide in penile erection.. Expert opinion on pharmacotherapy. 2001-01, 2 (1): 95–107. PMID 11336572. doi:10.1517/14656566.2.1.95.使用|accessdate=需要含有|url= (帮助)