Duplicate title to
Chen, X., Gross, T., & Dieckmann, U.
ORCID: https://orcid.org/0000-0001-7089-0393
(2013).
Shared rewarding overcomes defection traps in generalized volunteer's dilemmas.
Journal of Theoretical Biology 13-21. 10.1016/j.jtbi.2013.06.014.