| article html file updated | 5 February 2020 14:31 CET | Update | https://www.mdpi.com/1424-8247/3/5/1491 |
| article html file updated | 9 May 2019 06:22 CEST | Update | - |
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| article html file updated | 16 June 2015 09:49 CEST | Update | - |
| article html file updated | 5 June 2014 09:00 CEST | Update | - |
| article xml file uploaded | 5 June 2014 09:00 CEST | Original file | https://www.mdpi.com/1424-8247/3/5/1491/xml |
| article html file updated | 6 February 2013 17:36 CET | Update | - |
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| article html file updated | 18 January 2013 06:26 CET | Original file | - |
