Tsyntsarski, Boyko, Ivanka Stoycheva, Georgi Georgiev, Nartzislav Petrov, Angelina Kosateva, Bilyana Petrova, Anna Bouzekova-Penkova, Tanya Tsoncheva, and Gloria Issa. “Refuse-Derived Fuel Based Cobalt Catalysts for Hydrogen Production”. Proceedings of the Bulgarian Academy of Sciences 75, no. 9 (September 30, 2022): 1295–1302. Accessed February 27, 2024. https://proceedings.bas.bg/index.php/cr/article/view/155.