Ljiljanić, Nikola, Zoran Rajić, and Tamara Paunović. “USE OF PERT (PROGRAM EVALUATION AND REVIEW TECHNIQUE) AND PDM (PRECEDENCE DIAGRAMMING METHOD) IN ORGANIZING MODERN VEGETABLE SEEDLING PRODUCTION”. Economics of Agriculture 69, no. 1 (March 29, 2022): 119–131. Accessed April 20, 2024. https://ea.bg.ac.rs/index.php/EA/article/view/2070.