Fukuoka SI, Suzuki M, Okabayashi K, Takahashi E (Jun 1998). "Assignment of pancreatic zymogen granule membrane protein GP2 (GP2) to human chromosome band 9q21.11 to q21.2 by in situ hybridization". Cytogenet Cell Genet. 79 (3–4): 231–2. doi:10.1159/000134730. PMID9605860.
Fukuoka SI, Suzuki M, Okabayashi K, Takahashi E (Jun 1998). "Assignment of pancreatic zymogen granule membrane protein GP2 (GP2) to human chromosome band 9q21.11 to q21.2 by in situ hybridization". Cytogenet Cell Genet. 79 (3–4): 231–2. doi:10.1159/000134730. PMID9605860.