@article {bergman2012you, title = {You never call: Demoting unused contacts on mobile phones using DMTR}, journal = {Personal and Ubiquitous Computing}, volume = {16}, number = {6}, year = {2012}, pages = {757{\textendash}766}, publisher = {Springer-Verlag}, keywords = {Contact list, Demotion, Mobile phone, Personal information management, User-subjective approach}, doi = {10.1007/s00779-011-0411-3}, author = {Bergman, Ofer and Andreas Komninos and Liarokapis, Dimitrios and Clarke, James} }