Kuosmanen, Natalia, and Timo Kuosmanen. “Modeling Multiple Interacting Nutrient Stocks: Application to the Baltic Sea”. European Journal of Sustainable Development 7, no. 3 (October 1, 2018): 20. Accessed February 28, 2024. https://ojs.ecsdev.org/index.php/ejsd/article/view/656.