@article{NaumannTheobald2020,
  author    = {Helen Naumann and Thorsten Theobald},
  title     = {The 𝒮-cone and a primal-dual view on second-order representability},
  journal   = {Beitr{\"a}ge zur Algebra und Geometrie = Contributions to algebra and geometry},
  volume    = {62},
  number    = {1},
  pages     = {229 -- 249},
  doi       = {10.1007/s13366-020-00512-9},
  year      = {2020},
}