@Article{MayerLinz2015,
  author  = {{M}ayer, {S}ebastian},
  title	  = {{T}he effect of sparsity and relaxations thereof in certain function approximation problems},
  year	  = {2015},
  journal = {Guest lecture, JKU Linz},
  annote  = {talk},
  pdf     = {http://ullrich.ins.uni-bonn.de/mayer_linz_03062015.pdf}
}