| article html file updated | 9 February 2020 01:11 CET | Update | https://www.mdpi.com/1999-4907/9/1/14 |
| article html file updated | 29 September 2019 11:37 CEST | Update | - |
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| article html file updated | 1 February 2018 13:09 CET | Update | - |
| article html file updated | 26 December 2017 03:23 CET | Update | - |
| article xml uploaded. | 26 December 2017 03:22 CET | Update | https://www.mdpi.com/1999-4907/9/1/14/xml |
| article xml uploaded. | 26 December 2017 03:22 CET | Update | - |
| article pdf uploaded. | 26 December 2017 03:22 CET | Updated version of record | https://www.mdpi.com/1999-4907/9/1/14/pdf |
| article html file updated | 25 December 2017 13:07 CET | Original file | - |
| article xml uploaded. | 25 December 2017 13:06 CET | Original file | - |
| article pdf uploaded. | 25 December 2017 13:06 CET | Version of Record | https://www.mdpi.com/1999-4907/9/1/14/pdf-vor |