@article{VoltmerSpahnSchaarschmidtetal.2011,
  author    = {Edgar Voltmer and Claudia Spahn and Uwe Schaarschmidt and Ulf Kieschke},
  title     = {Work-related behavior and experience patterns of entrepreneurs compared to teachers and physicians},
  journal   = {International archives of occupational and environmental health},
  volume    = {84},
  number    = {5},
  pages     = {479 -- 490},
  doi       = {10.1007/s00420-011-0632-9},
  year      = {2011},
}