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 Minimum Density of Identifying Codes of Hexagonal Grids with a Finite Number of Rows. In <em>Anais do VII Encontro de Teoria da Computação</em>, julho 31, 2022, Niterói, Brasil. SBC, Porto Alegre, Brasil, 145-148. DOI: <a href="https://doi.org/10.5753/etc.2022.223348">https://doi.org/10.5753/etc.2022.223348</a>.