@Article{	  Babuska.Griebel.Pitkaranta:1989,
  author	= { I.~Babu\v{s}ka and M.~Griebel and J.~Pitkaranta},
  title		= {The problem of selecting the shape functions for a p-type
		  finite element},
  journal	= { {Int. J. Num. Meth. Engin.}},
  volume	= {28},
  pages		= {1891--1908},
  year		= {1989},
  annote	= {article}
}
  note		= {also as Report MD88-36-IB-MG-JP, TR88-36, University of
		  Maryland, IPST, College Park, 1988},