Burkhardt E, Adham IM, Brosig B, Gastmann A, Mattei MG, Engel W (March 1994). "Structural organization of the porcine and human genes coding for a Leydig cell-specific insulin-like peptide (LEY I-L) and chromosomal localization of the human gene (INSL3)". Genomics. 20 (1): 13–9. doi:10.1006/geno.1994.1121. PMID8020942.
Burkhardt E, Adham IM, Brosig B, Gastmann A, Mattei MG, Engel W (March 1994). "Structural organization of the porcine and human genes coding for a Leydig cell-specific insulin-like peptide (LEY I-L) and chromosomal localization of the human gene (INSL3)". Genomics. 20 (1): 13–9. doi:10.1006/geno.1994.1121. PMID8020942.