Personal Data in "Cold Calling"
Outsourcing marketing activities - how are call centres and "cold calling" regulated and what are the implications for personal data protection? A review of the trends and regulations by Mitko Karushkov and Mario Arabistanov: http://www.capital.bg/vestnikut/daily/konsultant/2016/11/23/2869729_lichnite_danni_pri_marketing_chrez_studeni_obajdaniia/