Numerical approximation has played a valuable supporting role in VLSI device simulation. Examples include (1) tensor product variation diminishing splines for models of transistor charges and currents and (2) continuation to find a safe operating region avoiding avalanche breakdown. More recently, quadratic box splines in three variables have been studied for use in Monte Carlo solution of the Boltzmann transport equation. The bivariate Zwart-Powell element does not directly generalize, but another particular box spline is constructed.
['Eric Grosse']
Approximation in VLSI simulation