TY - `JOUR` AU - Eckhard, Jan TI - Indicators of social isolation : a comparison based on survey data from Germany PY - 2018 LA - eng SP - 26 S. T2 - Social indicators research PY - 2018 VL - 139 SI - 3 SP - 963-988 DO - 10.1007/s11205-017-1741-y AN - UBHD-68207277 ER -