| article html file updated | 2 December 2020 10:05 CET | Update | https://www.mdpi.com/2504-2289/2/1/6 |
| article xml uploaded. | 2 December 2020 10:00 CET | Update | https://www.mdpi.com/2504-2289/2/1/6/xml |
| article html file updated | 9 February 2020 08:25 CET | Update | - |
| article html file updated | 1 October 2019 05:31 CEST | Update | - |
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| article html file updated | 7 March 2018 01:34 CET | Original file | - |
| article pdf uploaded. | 7 March 2018 01:33 CET | Updated version of record | https://www.mdpi.com/2504-2289/2/1/6/pdf |
| article pdf uploaded. | 2 March 2018 13:32 CET | Version of Record | https://www.mdpi.com/2504-2289/2/1/6/pdf-vor |
