00312nam a2200121Ia 4500082001700000100002600017245003600043260003500079300001500114490005100129500000500180700000500185  a517bW114.RF  aWachspress, Eugene L.  aRational finite element basisb  aNew YorkbAcademic Pressc1975  axiv, 331p.  aMathematics in Science and Engineeringv v.114  a  a