bookSection The Global Encyclopaedia of Informality vol. 1, Part 1 “Redistribution”, Chap. 2 “Neither gift nor payment : the sociability of instrumentality London Weber Florence Conclusion : ‘interested’ vs ‘disinterested’ giving : defining extortion, reciprocity and pure gifts in the connected worlds UCL Press 2018 196-200 et 212 http://www.ucl.ac.uk/ucl-press/browse-books/global-encyclopedia-of-informality-i