| article html file updated | 5 February 2020 18:50 CET | Update | https://www.mdpi.com/2072-6694/3/4/4258 |
| article html file updated | 8 January 2020 15:18 CET | Update | - |
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| article xml file uploaded | 5 September 2013 12:06 CEST | Update | https://www.mdpi.com/2072-6694/3/4/4258/xml |
| article html file updated | 4 September 2013 15:18 CEST | Update | - |
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| article html file updated | 28 August 2013 10:31 CEST | Update | - |
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| article html file updated | 29 January 2013 00:55 CET | Update | - |
| article html file updated | 26 January 2013 06:52 CET | Update | - |
| article html file updated | 23 January 2013 05:24 CET | Original file | - |
