Vaklieva-Bancheva, N. G., E. G. Shopova, and B. B. Ivanov. “Application of Fourier Transformation for Waste Minimization in Batch Plants. 2. Process-Units Assignment”. Hungarian Journal of Industry and Chemistry 31, no. 1 (September 1, 2003). Accessed April 29, 2024. https://hjic.mk.uni-pannon.hu/index.php/hjic/article/view/51.