\input zb-basic
\input zb-ioport
\iteman{io-port 70615419}
\itemau{Cramer, Henriette S. M.; Rost, Mattias; Holmquist, Lars Erik}
\itemti{Performing a check-in: emerging practices, norms and 'conflicts' in location-sharing using foursquare}
\itemso{Mobile HCI, 57-66 (2011).}
\itemcc{}
\itemut{}
\itemli{doi:10.1145/2037373.2037384}
\end