Hello there,
I can across this paper which explains how Carnegie Mellon University
and NASA Marshall Space Flight Center use ngspice on fedora for their
"Evolutionary Design of Fault-Tolerant Analog Control for a
Piezoelectric Pipe-Crawling Robot"
http://www.frc.ri.cmu.edu/~gholling/home/files/HollingerGECCO.pdf
I just thought of sharing it with you
Chitlesh