@misc{SchmidHatakRoessl,
  author    = {Schmid, Judith and Hatak, Isabella and R{\"o}ßl, Dietmar},
  title     = {Entrepreneurial Marketing as a Success Factor},
  subject      = {Marketing},
  language  = {en}
}
@misc{HatakSchmidRoessl,
  author    = {Hatak, Isabella and Schmid, Judith and R{\"o}ßl, Dietmar},
  title     = {Entrepreneurial Marketing as a Coping Strategy within an Economic Crisis},
  subject      = {Marketing},
  language  = {en}
}