@Article{	  Harbrecht.Peters.Siebenmorgen:2015,
  author	= {Harbrecht, H. and Peters, M. and Siebenmorgen, M.},
  title		= {Efficient approximation of random fields for numerical
		  applications},
  journal	= {Numerical Linear Algebra with Applications},
  volume	= {22},
  number	= {4},
  pages		= {596--617},
  year		= {2015}
}