Media type: E-Article Title: Learner control and personal learning environment: a challenge for instructional design Contributor: Väljataga, Terje; Laanpere, Mart Published: Informa UK Limited, 2010 Published in: Interactive Learning Environments, 18 (2010) 3, Seite 277-291 Language: English DOI: 10.1080/10494820.2010.500546 ISSN: 1049-4820; 1744-5191 Origination: Footnote: