N. K. A. Astiari, N. P. A. Sulistiawati, I. B. K. Mahardika, and I. N. Rai, “Overcoming the failure of fruit-set and fruit drop of siam orange on off-season period through application of mycorrhizal inoculants and ZNSO4 micro fertilizer dosage”, Int. J. of Life Sci., vol. 3, no. 3, pp. 16–24, Nov. 2019.