Nugraha, Media Fitri Isma, et al. “Heavy Metal Uptake Test by Aquatic Plants Tissue Culture Products With Neutron Activation Analysis in Ciliwung River”. International Journal on Advanced Science, Engineering and Information Technology, vol. 11, no. 6, Dec. 2021, pp. 2323-7, doi:10.18517/ijaseit.11.6.14520.