Dang, Thanh Tung, Baltazár Frankovic, Ivana Budinská, Ben Flood, Con Sheahan, and Bao Lam Dang. 2012. “Using Heuristic Search for Solving Single Machine Batch Processing Problems”. COMPUTING AND INFORMATICS 25 (5):405-20. https://www.cai.sk/ojs/index.php/cai/article/view/351.