| article html file updated | 5 February 2020 17:36 CET | Update | https://www.mdpi.com/1424-8247/4/7/976 |
| article html file updated | 9 May 2019 00:10 CEST | Update | - |
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| article xml file uploaded | 17 June 2014 04:43 CEST | Original file | https://www.mdpi.com/1424-8247/4/7/976/xml |
| article html file updated | 6 February 2013 21:40 CET | Update | - |
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