Tang H, Bercher P. Symmetries and Other Variations of “End-Recursive” HTN Problems: Mapping the Border Between Decidable and Undecidable Restrictions. AAAI [Internet]. 2026 Mar. 14 [cited 2026 May 14];40(43):36412-20. Available from: https://ojs.aaai.org/index.php/AAAI/article/view/40962