@Article{	  Harbrecht.Peters.Siebenmorgen:2013*2,
  year		= {2013},
  title		= {Multilevel accelerated quadrature for {PDE}s with
		  log-normal distributed random coefficients},
  author	= {Harbrecht, H. and Peters, M. and Siebenmorgen, M.},
  journal	= {Preprint 2013-18 Mathematisches Institut Universit\"at
		  Basel},
  publisher	= {Mathematisches Institut Universit\"at Basel},
  address	= {Mathematisches Institut Universit\"at Basel}
}