xxx
Array
(
    [0] => Array
        (
            [id] => 1121
            [topology] => 4<sup>7</sup>T14
            [link_rcsr] => 
            [in_col] => 7
            [transitivity] => [7(10)97]
            [space_group] => Cmcm
            [pearson] => oS40
            [cn] => 4
            [Year] => 2016
            [cn_sort] => 004-
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            [caid] => 272
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 3.470
            [e_gap] => 
            [energy] => 0.641
            [bulk_mod] => 430.8
            [shear_mod] => 490.5
            [vicker_hard] => 92.2
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 1122
            [topology] => 4<sup>7</sup>T14
            [link_rcsr] => 
            [in_col] => 7
            [transitivity] => [7(10)97]
            [space_group] => Cmcm
            [pearson] => oS40
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            [Year] => 2016
            [cn_sort] => 004-
            [topology_str] => 4<sup>7</sup>T14
            [caid] => 272
            [nn] => 1
            [name] => 4(I)
            [pressure] => 
            [density] => 
            [e_gap] => 4.09(D)
            [energy] => 
            [bulk_mod] => 
            [shear_mod] => 
            [vicker_hard] => 
            [ref_file] => /References/2016_PhysRevB_93_085201
            [publ_year] => 2016
            [ref] => 
        )

)
xxx