@Article{dVV-2020,
  title = 	 {Matroidal Approximations of Independence Systems},
  author = 	 {Sven de Vries and  Rakesh V. Vohra},
  journal = {Operations Research Letters},
  volume = {48},
  pages = {587-593},
  url = {https://doi.org/10.1016/j.orl.2020.07.002},
  arxiv-url = {https://arxiv.org/abs/1906.06217},
  year = {2020}
 }