Takahara K, Osborne L, Elliott RW, Tsui LC, Scherer SW, Greenspan DS (Mar 1997). "Fine mapping of the human and mouse genes for the type I procollagen COOH-terminal proteinase enhancer protein". Genomics. 31 (2): 253–256. doi:10.1006/geno.1996.0043. PMID8824813.
Takahara K, Osborne L, Elliott RW, Tsui LC, Scherer SW, Greenspan DS (Mar 1997). "Fine mapping of the human and mouse genes for the type I procollagen COOH-terminal proteinase enhancer protein". Genomics. 31 (2): 253–256. doi:10.1006/geno.1996.0043. PMID8824813.