xxx
Array
(
    [0] => Array
        (
            [id] => 1419
            [topology] => 4<sup>8</sup>T27
            [link_rcsr] => 
            [in_col] => 8
            [transitivity] => [8(18)(12)3]
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            [name] => 
            [pressure] => 
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            [e_gap] => 
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            [bulk_mod] => 404.8
            [shear_mod] => 451.4
            [vicker_hard] => 84.5
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 1420
            [topology] => 4<sup>8</sup>T27
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            [Year] => 2017
            [cn_sort] => 004-
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            [nn] => 1
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            [density] => 
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            [energy] => 
            [bulk_mod] => 
            [shear_mod] => 
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            [ref_file] => /References/2017_ChemPhysChem_18_873
            [publ_year] => 2017
            [ref] => 
        )

)
xxx