315993document103666Beyond emissions trading to a negative carbon economy a proposed carbon removal obligation and its implementation.pdfapplication/pdf1ce38e79feac8ce5e96740e5ba0c86e0MD520444122023-11-27 11:10:33https://pure.iiasa.ac.at/id/eprint/19210/1/Beyond%20emissions%20trading%20to%20a%20negative%20carbon%20economy%20a%20proposed%20carbon%20removal%20obligation%20and%20its%20implementation.pdf