Nguyen, T., & Phan, K. (2017). Cost and benefit analysis of maintaining Delonix regia trees on Nguyễn Văn Linh street in Ho Chi Minh City. Science & Technology Development Journal: Natural Sciences, 1(T4), 215-221. https://doi.org/https://doi.org/10.32508/stdjns.v1iT4.478