| article html file updated | 8 February 2020 21:31 CET | Update | https://www.mdpi.com/2411-9660/1/2/9 |
| article html file updated | 28 September 2019 13:41 CEST | Update | - |
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| article html file updated | 21 November 2017 03:11 CET | Update | - |
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| article pdf uploaded. | 21 November 2017 03:09 CET | Updated version of record | https://www.mdpi.com/2411-9660/1/2/9/pdf |
| article html file updated | 20 November 2017 10:11 CET | Update | - |
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| article html file updated | 19 November 2017 09:36 CET | Original file | - |
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| article pdf uploaded. | 19 November 2017 09:35 CET | Updated version of record | https://www.mdpi.com/2411-9660/1/2/9/pdf-vor |
| article pdf uploaded. | 17 November 2017 14:07 CET | Version of Record | https://www.mdpi.com/2411-9660/1/2/9/pdf-vor |
