| article html file updated | 6 February 2020 08:38 CET | Update | https://www.mdpi.com/1424-8247/7/4/464 |
| article html file updated | 7 May 2019 15:49 CEST | Update | - |
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| article xml file uploaded | 12 May 2014 15:32 CEST | Original file | https://www.mdpi.com/1424-8247/7/4/464/xml |
| article pdf uploaded. | 16 April 2014 10:38 CEST | Version of Record | https://www.mdpi.com/1424-8247/7/4/464/pdf |
