APA

Xia Y., Chackalamannil S., Czarniecki M., Tsai H., Vaccaro H., Cleven R., Cook J., Fawzi A., Watkins R. & Zhang H. (19980213). Synthesis and evaluation of polycyclic pyrazolo[3,4-d]pyrimidines as PDE1 and PDE5 cGMP phosphodiesterase inhibitors. : Journal of medicinal chemistry.

Chicago

Xia Y, Chackalamannil S, Czarniecki M, Tsai H, Vaccaro H, Cleven R, Cook J, Fawzi A, Watkins R and Zhang H. 19980213. Synthesis and evaluation of polycyclic pyrazolo[3,4-d]pyrimidines as PDE1 and PDE5 cGMP phosphodiesterase inhibitors. : Journal of medicinal chemistry.

Harvard

Xia Y., Chackalamannil S., Czarniecki M., Tsai H., Vaccaro H., Cleven R., Cook J., Fawzi A., Watkins R. and Zhang H. (19980213). Synthesis and evaluation of polycyclic pyrazolo[3,4-d]pyrimidines as PDE1 and PDE5 cGMP phosphodiesterase inhibitors. : Journal of medicinal chemistry.

MLA

Xia Y, Chackalamannil S, Czarniecki M, Tsai H, Vaccaro H, Cleven R, Cook J, Fawzi A, Watkins R and Zhang H. Synthesis and evaluation of polycyclic pyrazolo[3,4-d]pyrimidines as PDE1 and PDE5 cGMP phosphodiesterase inhibitors. : Journal of medicinal chemistry. 19980213.