Fisher DA, Smith JF, Pillar JS, St Denis SH, Cheng JB (Jul 1998). "Isolation and characterization of PDE8A, a novel human cAMP-specific phosphodiesterase". Biochem Biophys Res Commun. 246 (3): 570–577. doi:10.1006/bbrc.1998.8684. PMID9618252.
Fisher DA, Smith JF, Pillar JS, St Denis SH, Cheng JB (Jul 1998). "Isolation and characterization of PDE8A, a novel human cAMP-specific phosphodiesterase". Biochem Biophys Res Commun. 246 (3): 570–577. doi:10.1006/bbrc.1998.8684. PMID9618252.