Associations between symptoms of problematic smartphone, Facebook, WhatsApp, and Instagram use: An item-level exploratory graph analysis perspective / Dmitri Rozgonjuk [et al.]
  Bibliogr.: p. 694-697. - Abstr. eng. - DOI: https://doi.org/10.1556/2006.2020.00036
  In: Journal of Behavioral Addictions. - ISSN 2062-5871, eISSN 2063-5303. - 2020. 9. évf. 3. sz., p. 686-697. : ill.