| article html file updated | 5 February 2020 21:58 CET | Update | https://www.mdpi.com/2079-4983/3/3/615 |
| article html file updated | 8 May 2019 14:47 CEST | Update | N/A |
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| article xml file uploaded | 5 March 2015 11:19 CET | Update | https://www.mdpi.com/2079-4983/3/3/615/xml |
| article html file updated | 18 March 2014 09:44 CET | Update | N/A |
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| article html file updated | 7 February 2013 14:59 CET | Update | N/A |
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| article html file updated | 29 January 2013 06:35 CET | Update | N/A |
| article html file updated | 24 January 2013 01:58 CET | Original file | N/A |