References
- Centre for Environmental & Natural Resources Monitoring (CENM), Hanoi Department of Natural Resources and Environment (2019). Environmental monitoring data Report of To Lich River from 2014 to 2016, pp. 3-25.
- Vietnam Environment Administration (2011). Decision 879/QD-TCMT on Calculation of water quality index. Dated July 1, 2011.
- Environmental Protection Agency (EPA), Hanoi Department of Natural Resources and Environment (2019). Environmental monitoring data Report of the Nhue and Day Rivers in Hanoi from 2014 to 2018, pp. 3-20.
- Environmental Protection Agency (EPA), Hanoi Department of Natural Resources and Environment (2019). Discharges Sources Report of the Nhue and Day Rivers in Hanoi from 2014 to 2018, pp. 5-80
- General Statistics Office of Vietnam (2017). Hanoi Statistical Yearbook in 2017, pp. 20-21.