Chung, Nguyen Hoai, et al. “A Review of Tertiary Palynomorph Assemblage in Cuu Long Basin: Case Study of Palynomorphs in Miocene ”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 24, no. 3, Sept. 2015, pp. 103-11, https://www.gssrr.org/JournalOfBasicAndApplied/article/view/4585.