De Bruyne, Bos, Asosingh et al.: "Epigenetic silencing of the tetraspanin CD9 during disease progression in multiple myeloma cells and correlation with survival." in: Clinical cancer research : an official journal of the American Association for Cancer Research, Vol. 14, Issue 10, pp. 2918-26, 2008 (PubMed).
Wang, Bégin, Bérubé et al.: "Down-regulation of CD9 expression during prostate carcinoma progression is associated with CD9 mRNA modifications." in: Clinical cancer research : an official journal of the American Association for Cancer Research, Vol. 13, Issue 8, pp. 2354-61, 2007 (PubMed).
Charrin, Le Naour, Oualid et al.: "The major CD9 and CD81 molecular partner. Identification and characterization of the complexes." in: The Journal of biological chemistry, Vol. 276, Issue 17, pp. 14329-37, 2001 (PubMed).
Rubinstein, Le Naour, Lagaudrière-Gesbert et al.: "CD9, CD63, CD81, and CD82 are components of a surface tetraspan network connected to HLA-DR and VLA integrins." in: European journal of immunology, Vol. 26, Issue 11, pp. 2657-65, 1997 (PubMed).
Rubinstein, Benoit, Billard et al.: "Organization of the human CD9 gene." in: Genomics, Vol. 16, Issue 1, pp. 132-8, 1993 (PubMed).
Lanza, Wolf, Fox et al.: "cDNA cloning and expression of platelet p24/CD9. Evidence for a new family of multiple membrane-spanning proteins." in: The Journal of biological chemistry, Vol. 266, Issue 16, pp. 10638-45, 1991 (PubMed).