| article html file updated | 9 February 2020 00:38 CET | Update | https://www.mdpi.com/1999-4907/8/12/508 |
| article html file updated | 29 September 2019 08:30 CEST | Update | - |
| article html file updated | 2 May 2019 07:21 CEST | Update | - |
| article html file updated | 18 April 2019 05:13 CEST | Update | - |
| article html file updated | 2 January 2018 17:04 CET | Update | - |
| article html file updated | 22 December 2017 03:46 CET | Update | - |
| article xml uploaded. | 22 December 2017 03:45 CET | Update | https://www.mdpi.com/1999-4907/8/12/508/xml |
| article pdf uploaded. | 22 December 2017 03:45 CET | Updated version of record | https://www.mdpi.com/1999-4907/8/12/508/pdf |
| article html file updated | 20 December 2017 09:48 CET | Original file | - |
| article xml uploaded. | 20 December 2017 09:47 CET | Original file | - |
| article pdf uploaded. | 20 December 2017 09:47 CET | Version of Record | https://www.mdpi.com/1999-4907/8/12/508/pdf-vor |
