1. these conditions assume that making any donation is always better than not donating. One potential violation in reality is if donating a very small amount causes embarrassment;U D (e ? D, D; ?) ? U C;?2U CD (e ? d, d) + U DD (e ? d, d; ?) + U CC (e ? d, d) < 0 ?0 ? d ? e Implicitly
2. Quality certification for nonprofits, charitable giving, and donor's trust: Experimental evidence;Maja Adena;Journal of Economic Behavior & Organization,2019
3. The real impact of fintech: Evidence from mobile payment technology;Sumit Agarwal;Available at SSRN,2020
4. Donor retention in online crowdfunding communities: A case study of donorschoose. org;Tim Althoff;Proceedings of the 24th international conference on world wide web,2015