Raitanen, E., Similä, J., Siikavirta, K., Primmer, E. (2013) Economic Instruments for Biodiversity and Ecosystem Service Conservation & the EU State Aid RegulationEuropean Environmental & Planning Law 10(1): 6-28. http://booksandjournals.brillonline.com/content/journals/10.1163/18760104-01001002