Becker, Ann and Geiger, Dan. 1996. “Optimization of Pearl’s Method of Conditioning and Greedy-Like Approximation Algorithms for the Vertex Feedback Set Problem.”Artificial Intelligence 83(1): 167–188.
Becker, Ann and Geiger, Dan. 2001. “A Sufficiently Fast Algorithm for Finding Close to Optimal Clique Trees.”Artificial Intelligence 125(1–2): 3–17.