P. Verlinden et R. Cools, PROOF OF A CONJECTURED ASYMPTOTIC-EXPANSION FOR THE APPROXIMATION OF SURFACE INTEGRALS, Mathematics of computation, 63(208), 1994, pp. 717-725
Georg introduced a new kind of trapezoidal rule and midpoint rule to a
pproximate a surface integral over a curved triangular surface and con
jectured the existence of an asymptotic expansion for this approximati
on as the subdivision of the surface gets finer. The purpose of this p
aper is to prove the conjecture.