A BMP-FGF Morphogen Toggle Switch Drives the Ultrasensitive Expression of Multiple Genes in the Developing Forebrain. - Shyam Srinivasan; Jia Sheng Hu; D. Spencer Currle; Ernest S. Fung; Wayne B. Hayes; Arthur D. Lander; Edwin S. Monuki (PLoS Comput. Biol., 2014)