| article html file updated | 5 February 2020 19:02 CET | Update | https://www.mdpi.com/2079-4983/3/1/23 |
| article html file updated | 8 May 2019 21:08 CEST | Update | - |
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| article html file updated | 16 June 2015 21:00 CEST | Update | - |
| article html file updated | 18 March 2014 09:41 CET | Update | - |
| article xml file uploaded | 18 March 2014 09:41 CET | Original file | https://www.mdpi.com/2079-4983/3/1/23/xml |
| article html file updated | 7 February 2013 09:38 CET | Update | - |
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| article html file updated | 26 January 2013 07:21 CET | Update | - |
| article html file updated | 23 January 2013 07:08 CET | Original file | - |
