Nishimura M, Isaka F, Ishibashi M, Tomita K, Tsuda H, Nakanishi S, Kageyama R (April 1998). "Structure, chromosomal locus, and promoter of mouse Hes2 gene, a homologue of Drosophila hairy and Enhancer of split".Genomics.49 (1):69–75.doi:10.1006/geno.1998.5213.PMID9570950.
Katoh M, Katoh M (August 2004). "Identification and characterization of human HES2, HES3, and HES5 genes in silico".International Journal of Oncology.25 (2):529–34.doi:10.3892/ijo.25.2.529.PMID15254753.