Modeling plateau potentials
i once wrote a paper doing biophysical modeling of neurons that could create plateau potentials.  While the paper itself is not exactly what you are looking for, there should be lots of good references in there:
http://www.jneurosci.org/content/33/2/424.short
Sanders H, Berends M, 
Major G, 
Goldman MS,
Lisman JE. (2013) NMDA and GABAB (KIR) Conductances: The “Perfect Couple” for Bistability. J. Neurosci. 33, 424–429

also, check other articles that cited that paper: https://scholar.google.com/scholar?cites=2120401607202660739