| article html file updated | 6 February 2020 02:16 CET | Update | https://www.mdpi.com/1660-4601/10/6/2109 |
| article html file updated | 19 September 2019 21:03 CEST | Update | N/A |
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| article xml file uploaded | 6 August 2013 15:38 CEST | Original file | https://www.mdpi.com/1660-4601/10/6/2109/xml |
| article pdf uploaded. | 23 May 2013 12:26 CEST | Version of Record | https://www.mdpi.com/1660-4601/10/6/2109/pdf |