Heng Guo, Pinyan Lu. On the Complexity of Holant Problems. In Andrei A. Krokhin, Stanislav Zivny, editors, The Constraint Satisfaction Problem: Complexity and Approximability. Volume 7 of Dagstuhl Follow-Ups, pages 159-177, Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, 2017. [doi]
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