E. Z. Nungula, L. R. Chappa, V. V. Ngaiza, S. Maitra, and H. I. Gitari, “Potentials of azolla-cyanobacteria symbiosis as a biofertilizer in lowland rice production systems: A review”, WSR, vol. 13, no. 1, pp. 21–30, Jan. 2026.