Ema M, Morita M, Ikawa S, Tanaka M, Matsuda Y, Gotoh O, Saijoh Y, Fujii H, Hamada H, Kikuchi Y, Fujii-Kuriyama Y (1996). ""Two new members of the murine Sim gene family are transcriptional repressors and show different expression patterns during mouse embryogenesis."". Mol. Cell. Biol. 16 (10): 5865–75. PMC 231588. PMID 8927054.