Trust Management XIII 13th IFIP WG 11.11 International Conference, IFIPTM 2019, Copenhagen, Denmark, July 17-19, 2019, Proceedings - Meng, Weizhi; Meng, Weizhi; Cofta, Piotr; Cofta, Piotr; Jensen, Christian Damsgaard; Jensen, Christian Damsgaard; Grandison, Tyrone; Grandison, Tyrone (Springer International Publishing : Imprint: Springer, 2019)