Dien, Nguyen, 		Vinh, Nguyen, 		Hanh, Vo, AND 		Thanh, Nguyen.
" Species composition of heterocytous cyanobacteria in some types of cultivated soils in Nghe An province" <em>VNU Journal of Science: Natural Sciences and Technology</em> [Online], Volume 34 Number 1 (23 March 2018)