Thi Dep, T. “ASSAYS TO INDUCE FLOWERING IN PITAHAYA PLANT- HYLOCEREUS UNDATUS (HAW.) BRITT and ROSE - CACTACEAE”. VNUHCM Journal of Science and Technology Development, Vol. 2, no. 1, Jan. 1999, pp. 20-26, doi:https://doi.org/10.32508/stdj.v2i1.3609.