| article html file updated | 9 February 2020 06:02 CET | Update | https://www.mdpi.com/2504-477X/2/1/7 |
| article html file updated | 30 September 2019 15:48 CEST | Update | - |
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| article html file updated | 9 February 2018 08:39 CET | Original file | - |
| article xml uploaded. | 9 February 2018 08:37 CET | Original file | https://www.mdpi.com/2504-477X/2/1/7/xml |
| article pdf uploaded. | 9 February 2018 08:37 CET | Version of Record | https://www.mdpi.com/2504-477X/2/1/7/pdf |
