| article html file updated | 7 February 2020 06:38 CET | Update | https://www.mdpi.com/2072-666X/7/4/57 |
| article html file updated | 21 September 2019 14:15 CEST | Update | - |
| article html file updated | 5 May 2019 19:58 CEST | Update | - |
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| article html file updated | 29 April 2016 05:28 CEST | Update | - |
| article html file updated | 30 March 2016 13:57 CEST | Original file | - |
| article xml uploaded. | 30 March 2016 13:56 CEST | Original file | https://www.mdpi.com/2072-666X/7/4/57/xml |
| article pdf uploaded. | 30 March 2016 13:56 CEST | Version of Record | https://www.mdpi.com/2072-666X/7/4/57/pdf |
