| article html file updated | 9 February 2020 05:05 CET | Update | https://www.mdpi.com/2079-6439/6/1/8 |
| article html file updated | 30 September 2019 09:57 CEST | Update | - |
| article html file updated | 1 May 2019 21:56 CEST | Update | - |
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| article html file updated | 26 March 2018 15:40 CEST | Update | - |
| article html file updated | 1 February 2018 02:51 CET | Original file | - |
| article xml uploaded. | 1 February 2018 02:50 CET | Original file | https://www.mdpi.com/2079-6439/6/1/8/xml |
| article pdf uploaded. | 1 February 2018 02:50 CET | Version of Record | https://www.mdpi.com/2079-6439/6/1/8/pdf |
