| article html file updated | 5 February 2020 21:31 CET | Update | https://www.mdpi.com/2079-6374/2/3/291 |
| article html file updated | 8 May 2019 15:46 CEST | Update | - |
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| article xml file uploaded | 21 July 2014 03:36 CEST | Original file | https://www.mdpi.com/2079-6374/2/3/291/xml |
| article html file updated | 7 February 2013 14:15 CET | Update | - |
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| article html file updated | 26 January 2013 23:24 CET | Update | - |
| article html file updated | 23 January 2013 23:47 CET | Original file | - |
