Jiménez-Mateo O, Rodríguez-Torres A, Avila S, Castrillo JL (2006). "The transcription factor PLA-1/SKN-1A is expressed in human placenta and regulates the placental lactogen-3 gene expression". Placenta. 27 (4–5): 357–66. doi:10.1016/j.placenta.2005.03.011. PMID16005513.