Научни публикации

A methodological framework for achieving sustainable hydrogen supply chain produced via biogas-based steam methane reforming,

Nikolova D., T. Valkanova, 2026, A methodological framework for achieving sustainable hydrogen supply chain produced via biogas-based steam methane reforming, International journal for science, technics and innovation for the industry MACHINES, TECHNOLOGIES, MATERIALS, YEAR XX, PP: 99-102, Issue 3, ISSN Print 1313-0226, ISSN WEB 1314-507X

A methodological framework for achieving sustainable hydrogen supply chain produced via biogas-based steam methane reforming,

Nikolova D., T. Valkanova, 2026, A methodological framework for achieving sustainable hydrogen supply chain produced via biogas-based steam methane reforming, Proceedings XI International Scientific Conference High Technologies. Business. Society 2026, YEAR XI, ISSUE 1 (14), PP: 5- 8, ISSN 2535-0005(PRINT), ISSN 2535-0013 (ONLINE)

Hydrogen as a Sustainable Energy Vector in Transport: Supply Chain Optimization via Mixed-Integer Linear Programming

Nikolova D., T. Valkanova, 2026, Hydrogen as a Sustainable Energy Vector in Transport: Supply Chain Optimization via Mixed-Integer Linear Programming, Proceedings of The Technical University of Sofia, ISSN: 2738-8549, 2738-8530 Volume 76, Issue 1, DOI: 10.47978/TUS.2025.76.01.02

Mathematical modeling of the hydrogen supply chain — an integrated approach for sustainable transport

Nikolova D., T. Valkanova, 2025, Mathematical modeling of the hydrogen supply chain — an integrated approach for sustainable transport, International Scientific Journal “MATHEMATICAL MODELING”, YEAR IX, ISSUE 2, PP: 58-61, WEB ISSN 2603-2929; PRINT ISSN 2535-0986

Optimization approach for the design of a sustainable hydrogen supply chain through steam methane reforming

Ganev E., V. Beschkov, E. Kirilova, D. Nikolova, R. Vladova, V. M. Dimova, 2025, Optimization approach for the design of a sustainable hydrogen supply chain through steam methane reforming, Bulgarien Chemical Comunications, Volume 57, Issue 2, (pp. 123-130), DOI: 10.34049/bcc.57.2.5696

Mathematical modeling of the hydrogen supply chain — an integrated approach for sustainable transport

Nikolova D., T. Valkanova, 2025, Mathematical modeling of the hydrogen supply chain — an integrated approach for sustainable transport, Proceedings IX International Scientific Conference Mathematical Modeling, Vol. 1 (9), PP: 59-61, ISSN 2535-0978 (PRINT), ISSN 2603-3003 (ON-LINE)

Optimal design of hydrogen infrastructure based on ecological, economic, and social frameworks

Nikolova D., T. Valkanova, 2025, Optimal design of hydrogen infrastructure based on ecological, economic, and social frameworks, Proceedings of University of Ruse, Vol. 64, book 10.1, PP: 22-27, ISSN 1311-3321 (PRINT), ISSN 2535-1028 (CD-ROM), ISSN 2603-4123 (ON-LINE)