| article html file updated | 8 February 2020 03:51 CET | Update | https://www.mdpi.com/2218-2004/5/2/17 |
| article html file updated | 4 May 2019 01:44 CEST | Update | - |
| article html file updated | 28 June 2017 12:31 CEST | Update | - |
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| article xml uploaded. | 20 April 2017 02:35 CEST | Update | https://www.mdpi.com/2218-2004/5/2/17/xml |
| article pdf uploaded. | 20 April 2017 02:35 CEST | Updated version of record | https://www.mdpi.com/2218-2004/5/2/17/pdf |
| article html file updated | 18 April 2017 15:38 CEST | Original file | - |
| article pdf uploaded. | 18 April 2017 15:37 CEST | Version of Record | https://www.mdpi.com/2218-2004/5/2/17/pdf-vor |
