The following publications are possibly variants of this publication:
- Towards the Notion of Stability of Approximation for Hard Optimization Tasks and the Traveling Salesman ProblemHans-Joachim Böckenhauer, Juraj Hromkovic, Ralf Klasing, Sebastian Seibert, Walter Unger. ciac 2000: 72-86 [doi]
- Towards the Notion of Stability of Approximation for Hard Optimization Tasks and the Traveling Salesman ProblemHans-Joachim Böckenhauer, Juraj Hromkovic, Ralf Klasing, Sebastian Seibert, Walter Unger. eccc, 6(31), 1999. [doi]