Othman MF, A. Wahid MI, Batcha MFM, Md Seri S. Effects of Photoperiod Fragmentation on Lettuce Yield and Specific Energy Consumption in Indoor Farming Systems. IJIE. 2026;18(2):155-166. Accessed July 23, 2026. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/25131