| article html file updated | 6 February 2020 06:20 CET | Update | https://www.mdpi.com/1660-4601/11/1/30 |
| article html file updated | 7 May 2019 20:37 CEST | Update | - |
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| article html file updated | 19 August 2015 14:23 CEST | Update | - |
| article html file updated | 17 February 2014 11:05 CET | Original file | - |
| article xml file uploaded | 17 February 2014 11:05 CET | Original file | https://www.mdpi.com/1660-4601/11/1/30/xml |
| article pdf uploaded. | 19 December 2013 14:42 CET | Version of Record | https://www.mdpi.com/1660-4601/11/1/30/pdf |
