Mr. Laydi et B. Aoubiza, WACHSPRESSS RATIONAL FINITE-ELEMENTS OF ARBITRARY DEGREE, Comptes rendus de l'Academie des sciences. Serie 1, Mathematique, 320(11), 1995, pp. 1391-1394
This work is devoted to the study of Wachspress's rational finite elem
ent. We define Co-type finite elements of any degree on n-sided convex
polygons.