@article{BodenAlAkkadLiegletal.2016, author = {Alexander Boden and Amro Al-Akkad and Michael Liegl and Monika B{\"u}scher and Martin Stein and David Randall and Volker Wulf}, title = {Managing Visibility and Validity of Distress Calls with an Ad-Hoc SOS System}, series = {ACM Transactions on Computer-Human Interaction}, volume = {23}, number = {6}, publisher = {ACM}, issn = {1073-0516}, doi = {10.1145/2987382}, pages = {1 -- 26}, year = {2016}, language = {en} }