| article html file updated | 9 February 2020 06:29 CET | Update | https://www.mdpi.com/2073-4336/9/1/8 |
| article html file updated | 30 September 2019 18:29 CEST | Update | - |
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| article html file updated | 13 February 2018 07:08 CET | Original file | - |
| article xml uploaded. | 13 February 2018 07:07 CET | Original file | https://www.mdpi.com/2073-4336/9/1/8/xml |
| article pdf uploaded. | 13 February 2018 07:07 CET | Version of Record | https://www.mdpi.com/2073-4336/9/1/8/pdf |
