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    [0] => stdClass Object
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            [journal] => stdClass Object
                (
                    [id_jnl] => 97
                )

        )

    [1] => stdClass Object
        (
            [section] => stdClass Object
                (
                    [section] => 999
                )

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    [2] => stdClass Object
        (
            [title] => Array
                (
                    [0] => Information retrieval on the Internet: search engines and other retrieval tools@en
                    [1] => Recuperación de la información en Internet: motores y otros agentes de búsqueda@es
                )

        )

    [3] => stdClass Object
        (
            [abstract] => Array
                (
                    [0] => Due to the enormous number of documents that Internet contains and the practical impossibility of achieving search exhaustivity throughout hyperlinks, it was necessary to design some search tools to facilitate retrieval. This article is structured in two parts. Firstly, it gives an introduction to the concept of search engines, their evolution in the recent history of Internet, their components, their procedures and a prospective classification, trying to solve the current terminological chaos. Second, their comparative advantages and disadvantages are analyzed, and some proposals for further effectivity are given. Finally, a comprehensive bibliography for further readings is suggested. (Author amended).@en
                    [1] => Ante la gran cantidad de documentos existentes en Internt y la imposibilidad de realizar una búsqueda total por hiperenlaces, se diseñaron en Internet unas herramientas de búsqueda que facilitan la recuperación de documentos. El presente artículo se estructura en dos partes: por una parte intenta dar a conocer los motores de búsqueda, su evolución en la reciente historia de Internet, sus elementos componentes, la forma que tienen de trabajar y su clasificación, intentando dar así solución al caos terminológico existente actualmente. Por otra parte se analizan las ventajas e inconvenientes en el proceso de recuperación de información, planteando finalmente una serie de soluciones que el autor considera necesarias para ganar en efectividad. Finalmente, se ha intentado ofrecer una bibliografía lo más amplia posible para mantenerse actualizado en este cambiante mundo de la Red y los motores de búsqueda. (Autor)@es
                )

        )

    [4] => stdClass Object
        (
            [author] => Array
                (
                    [0] => José Raul Vaquero Pulido
                )

        )

    [5] => stdClass Object
        (
            [subject] => Array
                (
                )

        )

    [6] => stdClass Object
        (
            [source] => stdClass Object
                (
                    [vol] => 3
                    [nr] => 2
                    [year] => 1997
                    [theme] => 
                )

        )

    [7] => stdClass Object
        (
            [datePub] => Array
                (
                    [0] => 1997-06-01
                )

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    [8] => stdClass Object
        (
            [DOI] => Array
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                    [0] => stdClass Object
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                            [type] => DOI
                            [value] => Array
                                (
                                    [0] => 10.54886/scire.v3i2.1078
                                )

                        )

                )

        )

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                            [type] => HTTP
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                                    [0] => https://www.ibersid.eu/ojs/index.php/scire/article/view/1078
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                    [1] => stdClass Object
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                            [type] => HTTP
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                                    [0] => https://www.ibersid.eu/ojs/index.php/scire/article/view/1078/1060
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        )

    [10] => stdClass Object
        (
            [language] => Array
                (
                    [0] => es
                )

        )

    [11] => stdClass Object
        (
            [license] => Array
                (
                    [0] => RESERVED
                    [1] => by-nc-nd/4.0
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)