| article html file updated | 5 February 2020 22:46 CET | Update | https://www.mdpi.com/2224-2708/1/3/217 |
| article html file updated | 8 May 2019 12:45 CEST | Update | - |
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| article xml uploaded. | 25 January 2013 12:31 CET | Original file | https://www.mdpi.com/2224-2708/1/3/217/xml |
| article html file updated | 24 January 2013 07:23 CET | Original file | - |
