1.
et. al. GSS. Socio-economic Life Cycle Assessment of Silangit Airport in Lake Toba Area. TURCOMAT [Internet]. 2021 Apr. 28 [cited 2025 Oct. 14];12(10):6807 – 6814. Available from: https://www.turcomat.org/index.php/turkbilmat/article/view/5547