@article{AcsAudretschLehmannetal.2016,
  author    = {Zolt{\´a}n J. Acs and David B. Audretsch and Erik E. Lehmann and Georg Licht},
  title     = {National systems of entrepreneurship},
  journal   = {Small Business Economics},
  volume    = {46},
  number    = {4},
  pages     = {527 -- 535},
  doi       = {10.1007/s11187-016-9705-1},
  year      = {2016},
}