@inproceedings{PLHMMNT18:Hidden,
 author = {Peltonen, Ella and Lagerspetz, Eemil and Hamberg, Jonatan and Mehrotra, Abhinav and Musolesi, Mirco and Nurmi, Petteri and Tarkoma, Sasu},
 title = {The Hidden Image of Mobile Apps: Geographic, Demographic, and Cultural Factors in Mobile Usage},
 year = {2018}, 
 publisher = {ACM}, 
 doi = {10.1145/3229434.3229474}, 
 booktitle = {Proceedings of the 20th International Conference on Human-Computer Interaction with Mobile Devices and Services (MobileHCI'18)}
 }