Mochamad Riam Badriana, et al. “Impact Assessment of PSBB on Variations of NO2, CO, and Chlorophyll-a Concentration in Java Island During the COVID-19 Pandemic Based on Multi-Satellite Imagery Data”. OLDI (Oseanologi Dan Limnologi Di Indonesia), vol. 6, no. 2, Feb. 2026, pp. 107-23, doi:10.14203/oldi.2021.v6i2.353.