PT Journal AU Metzger, A Efroni, Z Mischau, L Metzger, J TI Data-Related Aspects of the Digital Content Directive SO JIPITEC PY 2018 BP 90 EP 109 VL 9 IS 1 DE Conformity; Consumer protection law; Contract law; Data as counter-performance; Data portability; Digital Content Directive; Embedded digital content and services; General Data Protection Regulation (GDPR); Personal Data ER