xxx
Array
(
    [0] => Array
        (
            [id] => 543
            [topology] => bbe-3,3-Imma
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => [2331]
            [space_group] => Imma
            [pearson] => oI16
            [cn] => 3
            [Year] => 2016
            [cn_sort] => 003-
            [topology_str] => bbe-3,3-Imma
            [sp_atoms] => 
            [caid] => 103
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 2.607
            [e_gap] => 
            [energy] => 0.351
            [bulk_mod] => 222.1
            [shear_mod] => 153.7
            [vicker_hard] => 17.9
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 544
            [topology] => bbe-3,3-Imma
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => [2331]
            [space_group] => Imma
            [pearson] => oI16
            [cn] => 3
            [Year] => 2016
            [cn_sort] => 003-
            [topology_str] => bbe-3,3-Imma
            [sp_atoms] => 
            [caid] => 103
            [nn] => 1
            [name] => bco-C16
            [pressure] => 
            [density] => 
            [e_gap] => Semimetal
            [energy] => 
            [bulk_mod] => 315
            [shear_mod] => 
            [vicker_hard] => 
            [ref_file] => /References/2016_PhysRevLett_116_195501
            [publ_year] => 2016
            [ref] => 
        )

)
xxx