| article html file updated | 23 February 2021 07:33 CET | Update | https://www.mdpi.com/2079-3200/6/1/5 |
| article html file updated | 9 February 2020 04:16 CET | Update | - |
| article html file updated | 30 September 2019 05:04 CEST | Update | - |
| article html file updated | 1 May 2019 23:42 CEST | Update | - |
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| article html file updated | 28 March 2019 18:12 CET | Update | - |
| article html file updated | 25 January 2018 05:27 CET | Original file | - |
| article xml uploaded. | 25 January 2018 05:25 CET | Original file | https://www.mdpi.com/2079-3200/6/1/5/xml |
| article pdf uploaded. | 25 January 2018 05:25 CET | Version of Record | https://www.mdpi.com/2079-3200/6/1/5/pdf |
