| article html file updated | 5 February 2020 14:52 CET | Update | https://www.mdpi.com/1424-8247/3/7/2007 |
| article html file updated | 18 September 2019 23:47 CEST | Update | - |
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| article xml file uploaded | 5 June 2014 09:15 CEST | Update | https://www.mdpi.com/1424-8247/3/7/2007/xml |
| article html file updated | 5 June 2014 09:10 CEST | Original file | - |
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