Potentials of Enhanced Context Awareness in Wearable Assistants for Parkinson's Disease Patients with the Freezing of Gait Syndrome. - Marc Bächlin; Daniel Roggen; Gerhard Tröster; Meir Plotnik; Noit Inbar; Inbal Maidan; Talia Herman; Marina Brozgol; Eliya Shaviv; Nir Giladi; Jeffrey M. Hausdorff (ISWC, 2009)