| article html file updated | 5 February 2020 18:09 CET | Update | https://www.mdpi.com/2079-4983/2/3/271 |
| article html file updated | 8 May 2019 23:04 CEST | Update | N/A |
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| article xml file uploaded | 14 August 2014 12:06 CEST | Update | https://www.mdpi.com/2079-4983/2/3/271/xml |
| article html file updated | 12 May 2014 15:31 CEST | Update | N/A |
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| article html file updated | 6 February 2013 22:39 CET | Update | N/A |
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| article html file updated | 26 January 2013 05:03 CET | Update | N/A |
| article html file updated | 22 January 2013 22:15 CET | Original file | N/A |