Array
(
    [0] => Array
        (
            [id] => 406
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            [link_rcsr] => http://rcsr.net/nets/mmt
            [in_col] => 1
            [transitivity] => [1331]
            [space_group] => Pccn
            [pearson] => oP8
            [cn] => 4
            [Year] => 2009
            [cn_sort] => 004-
            [topology_str] => mmt
            [caid] => 68
            [nn] => 0
            [name] => 
            [pressure] => 1000
            [density] => 3.533
            [e_gap] => 
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            [bulk_mod] => 352.9
            [shear_mod] => 209.4
            [vicker_hard] => 24.5
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 407
            [topology] => mmt
            [link_rcsr] => http://rcsr.net/nets/mmt
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            [space_group] => Pccn
            [pearson] => oP8
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            [Year] => 2009
            [cn_sort] => 004-
            [topology_str] => mmt
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            [ref_file] => /References/2009_JChemPhys_130_194512
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            [ref] => 
        )

)