| article html file updated | 6 February 2020 04:40 CET | Update | https://www.mdpi.com/2071-1050/5/10/4268 |
| article html file updated | 7 May 2019 23:49 CEST | Update | - |
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| article html file updated | 17 June 2015 13:35 CEST | Original file | - |
| article pdf uploaded. | 30 September 2013 15:29 CEST | Version of Record | https://www.mdpi.com/2071-1050/5/10/4268/pdf |
