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VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations > 2018 > 29 > 6 > 1283-1299
Information Systems Frontiers > 2019 > 21 > 2 > 405-416
British Journal of Psychology > 106 > 2 > 217 - 234
Scandinavian Journal of Management > 1997 > 13 > 1 > 77-93