Van Tam, Vu, 		Huu Nhan, Nguyen, AND 		Quy Tinh, Hoang.
" Dental caries situation of preschool children aged from 3 to 6 in Van Xuan commune, Vinh Tuong district, Vinh Phuc province" <em>VNU Journal of Science: Natural Sciences and Technology</em> [Online], Volume 33 Number 2S (10 October 2017)