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\bibitem{2951} Pau Riba, Josep Llados, \& Alicia Fornes. (2017). Error-tolerant coarse-to-fine matching model for hierarchical graphs. In Pasquale Foggia, Cheng-Lin Liu, \& Mario Vento (Eds.), \textit{11th IAPR-TC-15 International Workshop on Graph-Based Representations in Pattern Recognition} (Vol. 10310, pp. 107--117). Springer International Publishing.

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