Tatemoto K, Hosoya M, Habata Y, Fujii R, Kakegawa T, Zou MX, Kawamata Y, Fukusumi S, Hinuma S, Kitada C, Kurokawa T, Onda H, Fujino M (1998). „Isolation and characterization of a novel endogenous peptide ligand for the human APJ receptor”. Biochem. Biophys. Res. Commun.. 251 (2): 471—6. PMID9792798. doi:10.1006/bbrc.1998.9489.
Lee DK, Cheng R, Nguyen T, Fan T, Kariyawasam AP, Liu Y, Osmond DH, George SR, O'Dowd BF (2000). „Characterization of apelin, the ligand for the APJ receptor”. J. Neurochem.. 74 (1): 34—41. PMID10617103. doi:10.1046/j.1471-4159.2000.0740034.x.
Mesmin C, Dubois M, Becher F, Fenaille F, Ezan E (2010). „Liquid chromatography/tandem mass spectrometry assay for the absolute quantification of the expected circulating apelin peptides in human plasma.”. Rapid Commun Mass Spectrom. 24 (19): 2875—84. PMID20857448. doi:10.1002/rcm.4718.
Tatemoto K, Hosoya M, Habata Y, Fujii R, Kakegawa T, Zou MX, Kawamata Y, Fukusumi S, Hinuma S, Kitada C, Kurokawa T, Onda H, Fujino M (1998). „Isolation and characterization of a novel endogenous peptide ligand for the human APJ receptor”. Biochem. Biophys. Res. Commun.. 251 (2): 471—6. PMID9792798. doi:10.1006/bbrc.1998.9489.
Lee DK, Cheng R, Nguyen T, Fan T, Kariyawasam AP, Liu Y, Osmond DH, George SR, O'Dowd BF (2000). „Characterization of apelin, the ligand for the APJ receptor”. J. Neurochem.. 74 (1): 34—41. PMID10617103. doi:10.1046/j.1471-4159.2000.0740034.x.
Mesmin C, Dubois M, Becher F, Fenaille F, Ezan E (2010). „Liquid chromatography/tandem mass spectrometry assay for the absolute quantification of the expected circulating apelin peptides in human plasma.”. Rapid Commun Mass Spectrom. 24 (19): 2875—84. PMID20857448. doi:10.1002/rcm.4718.