@unpublished{	  Oettershagen:2018,
  author	= {J. Oettershagen},
  title		= {On optimal quadrature in reproducing kernel {H}ilbert
		  spaces},
  year		= {2018},
  note		= {submitted},
  pdf		= {http://wissrech.ins.uni-bonn.de/research/pub/oettershagen/INSPreprint1512.pdf}
		  
}