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Hildreth, C.R.: Intelligent interfaces and retrieval methods for subject searching in bibliographic retrieval systems (1989)
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Papadakis, I.; Stefanidakis, M.; Tzali, A.: Visualizing OPAC subject headings (2008)
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Fujita, M.; Lopes, L.; Moreira, W.; Piovezan dos Santos, L.B.; Andrade e Cruz, M.C.; Rodrigues de Barros Ribas, R.: Construction and evaluation of hierarchical structures of indexing languages for online catalogs of libraries : an experience of the São Paulo State University (UNESP) (2018)
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