1. Comprehensive carbon stock and flow accounting: a national framework to support climate change mitigation policy;Ajani;Ecol. Econ.,2013
2. Symbiotic simulation systems: an extended definition motivated by symbiosis in biology;Aydt,2008
3. A Study on Wastewater Treatment Sludge Utilization In Bulgarian Agriculture;Bachev;Econ. Enterprises. Macroecon.,2021
4. Barbiroli, G. (2010). Eco-efficiency or/and eco-effectiveness? Shifting to innovative paradigms for resource productivity. 4509. 10.1080/13504500609469688.
5. The idea of weak sustainability is illegitimate;Biely;Environ. Dev. Sustainability,,2018