| article html file updated | 5 February 2020 21:35 CET | Update | https://www.mdpi.com/1424-8247/5/8/837 |
| article html file updated | 8 May 2019 15:39 CEST | Update | N/A |
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| article html file updated | 6 August 2013 16:06 CEST | Update | N/A |
| article xml file uploaded | 6 August 2013 16:06 CEST | Original file | https://www.mdpi.com/1424-8247/5/8/837/xml |
| article html file updated | 7 February 2013 14:21 CET | Update | N/A |
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| article html file updated | 24 January 2013 00:02 CET | Original file | N/A |
