| article html file updated | 6 February 2020 02:38 CET | Update | https://www.mdpi.com/1660-4601/10/6/2468 |
| article html file updated | 8 May 2019 04:03 CEST | Update | - |
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| article html file updated | 23 July 2013 09:54 CEST | Original file | - |
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| article pdf uploaded. | 14 June 2013 11:57 CEST | Version of Record | https://www.mdpi.com/1660-4601/10/6/2468/pdf |
