xxx
Array
(
    [0] => Array
        (
            [id] => 749
            [topology] => 3,4<sup>2</sup>T136
            [link_rcsr] => 
            [in_col] => 3
            [transitivity] => [3442]
            [space_group] => Cmmm
            [pearson] => oS12
            [cn] => 3, 4 (1:2)
            [Year] => 2011
            [cn_sort] => 003-004-001-002-
            [topology_str] => 3,4<sup>2</sup>T136
            [caid] => 162
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 2.984
            [e_gap] => 
            [energy] => 0.828
            [bulk_mod] => 342.4
            [shear_mod] => 254.4
            [vicker_hard] => 32.0
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 750
            [topology] => 3,4<sup>2</sup>T136
            [link_rcsr] => 
            [in_col] => 3
            [transitivity] => [3442]
            [space_group] => Cmmm
            [pearson] => oS12
            [cn] => 3, 4 (1:2)
            [Year] => 2011
            [cn_sort] => 003-004-001-002-
            [topology_str] => 3,4<sup>2</sup>T136
            [caid] => 162
            [nn] => 1
            [name] => 3D (3,3)
            [pressure] => 
            [density] => 3.054
            [e_gap] => 
            [energy] => 
            [bulk_mod] => 343.91
            [shear_mod] => 283.55
            [vicker_hard] => 90.9
            [ref_file] => /References/2011_ACSNano_7226
            [publ_year] => 2011
            [ref] => 
        )

    [2] => Array
        (
            [id] => 751
            [topology] => 3,4<sup>2</sup>T136
            [link_rcsr] => 
            [in_col] => 3
            [transitivity] => [3442]
            [space_group] => Cmmm
            [pearson] => oS12
            [cn] => 3, 4 (1:2)
            [Year] => 2011
            [cn_sort] => 003-004-001-002-
            [topology_str] => 3,4<sup>2</sup>T136
            [caid] => 162
            [nn] => 2
            [name] => 3D (3,3)
            [pressure] => 35
            [density] => 
            [e_gap] => 1.24
            [energy] => 
            [bulk_mod] => 343.91
            [shear_mod] => 283.55
            [vicker_hard] => 90.9
            [ref_file] => /References/2013_ScientificReports_3_1331
            [publ_year] => 2013
            [ref] => 
        )

)
xxx