| article html file updated | 5 February 2020 22:10 CET | Update | https://www.mdpi.com/2076-3425/2/4/434 |
| article html file updated | 19 September 2019 13:38 CEST | Update | N/A |
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| article html file updated | 20 March 2019 13:00 CET | Update | N/A |
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| article html file updated | 20 May 2014 08:32 CEST | Update | N/A |
| article xml file uploaded | 20 May 2014 08:32 CEST | Original file | https://www.mdpi.com/2076-3425/2/4/434/xml |
| article html file updated | 7 February 2013 15:18 CET | Update | N/A |
| article html file updated | 24 January 2013 03:06 CET | Original file | N/A |
