Attribution-NonCommercial 4.0 International (CC BY-NC 4.0), Accessed, 2018. ,
SHP2DTA: Stata Module to Converts Shape Boundary Files to Stata Datasets, 2015. ,
, ESRI Shapefile Technical Description, 1998.
GADM Shapefile of Vietnam. Version 3.4, Global Administrative Areas (GADM, 2018. ,
GSO List of Administratinon Unit at, General Statistics Office Of Vietnam (GSO, 2014. ,
, Vietnamese National Assembly. 2013. Vietnam's 2013 Constitution, 2015.
Vietnamese Alphabet, Wikipedia. Accessed, 2018. ,