@article {turner2017reachable,
   author = {Turner, Liam D. and Allen, Stuart M. and Whitaker, Roger M.},
   title = {Reachable but not Receptive: Enhancing Smartphone Interruptibility Prediction
by Modelling the Extent of User Engagement with Notifications},
   journal = {Pervasive and Mobile Computing},
   publisher = {Elsevier},
   year = {2017}
}