Abdullah, Khadijha-Kuburat A., et al. “An Optimized Stochastic Gradient Descent Approach to a Bidirectional Long Short-Term Memory With Bidirectional Contextual Embeddings for Extractive Text Summarisation”. Nigerian Journal of Physics, vol. 35, no. 2, May 2026, pp. 264-70, https://doi.org/10.62292/njp.v35i2.2026.592.