| article html file updated | 5 February 2020 16:15 CET | Update | https://www.mdpi.com/1660-4601/8/1/21 |
| article html file updated | 9 May 2019 02:54 CEST | Update | N/A |
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| article html file updated | 16 June 2015 13:16 CEST | Update | N/A |
| article html file updated | 14 August 2014 11:42 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 11:42 CEST | Update | https://www.mdpi.com/1660-4601/8/1/21/xml |
| article html file updated | 14 August 2014 11:22 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 11:22 CEST | Original file | N/A |
| article html file updated | 6 February 2013 19:19 CET | Update | N/A |
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| article html file updated | 28 January 2013 20:44 CET | Update | N/A |
| article html file updated | 26 January 2013 00:20 CET | Update | N/A |
| article html file updated | 22 January 2013 07:35 CET | Original file | N/A |
