Balcers, Ojars, and Janis Teteris. “Luminescence Study of Detergent Optical Brighteners in the Context of Developing Optical Environmental Sensors for Water Quality Control”. Journal of Environmental Engineering and Landscape Management 14, no. 3 (September 30, 2006): 121-125. Accessed March 29, 2024. https://journals.vilniustech.lt/index.php/JEELM/article/view/7930.