xxx
Array
(
    [0] => Array
        (
            [id] => 881
            [topology] => 3,4<sup>3</sup>T72
            [link_rcsr] => 
            [in_col] => 4
            [transitivity] => [4554]
            [space_group] => Cmmm
            [pearson] => oS16
            [cn] => 3, 4 (1:3)
            [Year] => 2016
            [cn_sort] => 003-004-001-003-
            [topology_str] => 3,4<sup>3</sup>T72
            [caid] => 210
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 3.326
            [e_gap] => 
            [energy] => 0.192
            [bulk_mod] => 394.9
            [shear_mod] => 315.0
            [vicker_hard] => 44.1
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 882
            [topology] => 3,4<sup>3</sup>T72
            [link_rcsr] => 
            [in_col] => 4
            [transitivity] => [4554]
            [space_group] => Cmmm
            [pearson] => oS16
            [cn] => 3, 4 (1:3)
            [Year] => 2016
            [cn_sort] => 003-004-001-003-
            [topology_str] => 3,4<sup>3</sup>T72
            [caid] => 210
            [nn] => 1
            [name] => oC16
            [pressure] => 16.7
            [density] => 
            [e_gap] => 
            [energy] => 
            [bulk_mod] => 391.3
            [shear_mod] => 318.8
            [vicker_hard] => 42.9
            [ref_file] => /References/2016_AIPAdvance_055020
            [publ_year] => 2016
            [ref] => 
        )

)
xxx