Media type: E-Article Title: Passive and Active Measurement: Characterizing Instant Messaging Apps on Smartphones Contributor: Zhang, Li; Xu, Chao; Pathak, Parth H.; Mohapatra, Prasant Published: Springer International Publishing, 2015 Published in: Passive and Active Measurement (2015), Seite 83-95 Language: Not determined DOI: 10.1007/978-3-319-15509-8_7 ISSN: 0302-9743; 1611-3349 Origination: Footnote: