Ganev, E., Kirilova, E., Beschkov, V., Vladova, R., Hydrogen supply chain adapted for the Republic of Bulgaria based on environmental, economic and social criteria, International Conference “Science-Industry-Society Nexus for Sustainable Regions”, 12th – 14th June, Burgas, Bulgaria https://sisnexus.uniburgas.bg/images/programe/ProgrammeSISNexusFinal.pdf