| article html file updated | 7 February 2020 19:17 CET | Update | https://www.mdpi.com/1999-4907/7/12/312 |
| article html file updated | 22 September 2019 09:39 CEST | Update | N/A |
| article html file updated | 4 May 2019 19:55 CEST | Update | N/A |
| article html file updated | 27 December 2016 11:45 CET | Update | N/A |
| article html file updated | 9 December 2016 10:25 CET | Update | N/A |
| article xml uploaded. | 9 December 2016 10:24 CET | Update | https://www.mdpi.com/1999-4907/7/12/312/xml |
| article pdf uploaded. | 9 December 2016 10:24 CET | Updated version of record | https://www.mdpi.com/1999-4907/7/12/312/pdf |
| article html file updated | 8 December 2016 12:36 CET | Original file | N/A |
| article xml uploaded. | 8 December 2016 12:35 CET | Original file | N/A |
| article pdf uploaded. | 8 December 2016 12:35 CET | Version of Record | https://www.mdpi.com/1999-4907/7/12/312/pdf-vor |