-       MEA (Millenium Ecosystem Assessment). 2005. Ecosystem and human well-being: a Framework for assessment. Island Press, Washington.

-       Costanza, R., D'Arge, R., De Groot, R., et al. 1997. The value of the world's ecosystem services and natural capital. Nature 387:253-260.

-       Daily, G. 1997. Nature's services. Societal dependence on natural ecosystems. Island Press, Washington.

-       Setten, G., Myrvang, K. 2018. Ecosystem services as an integrative framework: what is the potential? Land Use Policy 75:549-556.

-       Pascual U, Balvanera P, Díaz S, et al. 2017. Valuing nature’s contributions to people: the IPBES approach. Current opinion in Environmental Sustainability 26-27:7-16.