“Influence of External Nitrogen on Nitrogenase Enzyme Activity and Auxin Production in Herbaspirillum seropedicae (Z78)” (2015) Tropical Life Sciences Research, 26(1), pp. 101–110. Available at: https://ejournal.usm.my/tlsr/article/view/tlsr_vol26-no-1-2015_9 (Accessed: 13 May 2024).