Finus and Rübbelke (2013) integrate local (secondary) benefits into the standard two-tiered cartel game of climate change. In one of their examples, they consider a payoff function with linear local and global benefits and square costs. It links traditional nature conservation efforts with the economic goal of sustainable use of biological resources. It establishes principles for the equitable and equitable sharing of benefits arising from the utilization of genetic resources, in particular those intended for commercial exploitation.  It also covers the rapidly growing biotechnology sector through its Cartagena Protocol on Biosafety, which addresses issues of technological development and technology transfer, benefit compensation and biosafety.