xxx
Array
(
    [0] => Array
        (
            [id] => 1316
            [topology] => 4<sup>20</sup>T3
            [link_rcsr] => 
            [in_col] => 14
            [transitivity] => [(20)(32)(31)(19)]
            [space_group] => P2/m
            [pearson] => mP40
            [cn] => 4
            [Year] => 2016
            [cn_sort] => 004-
            [topology_str] => 4<sup>20</sup>T3
            [caid] => 348
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 3.509
            [e_gap] => 
            [energy] => 0.604
            [bulk_mod] => 422.9
            [shear_mod] => 495.0
            [vicker_hard] => 93.6
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 1317
            [topology] => 4<sup>20</sup>T3
            [link_rcsr] => 
            [in_col] => 14
            [transitivity] => [(20)(32)(31)(19)]
            [space_group] => P2/m
            [pearson] => mP40
            [cn] => 4
            [Year] => 2016
            [cn_sort] => 004-
            [topology_str] => 4<sup>20</sup>T3
            [caid] => 348
            [nn] => 1
            [name] => 9
            [pressure] => 
            [density] => 
            [e_gap] => 
            [energy] => 
            [bulk_mod] => 
            [shear_mod] => 
            [vicker_hard] => 
            [ref_file] => /References/2016_PhysRevB_93_085201
            [publ_year] => 2016
            [ref] => 
        )

)
xxx