| article html file updated | 8 February 2020 23:31 CET | Update | https://www.mdpi.com/1999-4907/8/12/492 |
| article html file updated | 29 September 2019 01:55 CEST | Update | - |
| article html file updated | 2 May 2019 09:50 CEST | Update | - |
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| article html file updated | 2 January 2018 17:10 CET | Update | - |
| article html file updated | 8 December 2017 13:37 CET | Original file | - |
| article xml uploaded. | 8 December 2017 13:35 CET | Original file | https://www.mdpi.com/1999-4907/8/12/492/xml |
| article pdf uploaded. | 8 December 2017 13:35 CET | Version of Record | https://www.mdpi.com/1999-4907/8/12/492/pdf |
