Abdul Salam Jarrah Reinhard C. Laubenbacher Discrete Models of Biochemical Networks: The Toric Variety of Nested Canalyzing Functions. 15-22 2007 conf/ab/2007 AB http://dx.doi.org/10.1007/978-3-540-73433-8_2 db/conf/ab/ab2007.html#JarrahL07