TI - Investigation of microbial communities and [FeFe]-hydrogenase gene by different dry-dark fermentation processes on hydrogen production AU - VURAL, C. AU - VURAL, C. AU - AZBAR, N. AU - OZDEMIR, G. SO - Sigma Journal of Engineering and Natural Sciences 2026;44:1925-1939. DO - 10.14744/sigma.2026.2073