| article html file updated | 9 February 2020 00:33 CET | Update | https://www.mdpi.com/1999-4907/8/12/506 |
| article html file updated | 29 September 2019 08:00 CEST | Update | - |
| article html file updated | 2 May 2019 07:32 CEST | Update | - |
| article html file updated | 18 April 2019 05:23 CEST | Update | - |
| article html file updated | 2 January 2018 17:04 CET | Update | - |
| article html file updated | 21 December 2017 06:54 CET | Update | - |
| article xml uploaded. | 21 December 2017 06:53 CET | Update | https://www.mdpi.com/1999-4907/8/12/506/xml |
| article pdf uploaded. | 21 December 2017 06:53 CET | Updated version of record | https://www.mdpi.com/1999-4907/8/12/506/pdf |
| article html file updated | 21 December 2017 03:57 CET | Update | - |
| article xml uploaded. | 21 December 2017 03:55 CET | Update | - |
| article pdf uploaded. | 21 December 2017 03:55 CET | Updated version of record | https://www.mdpi.com/1999-4907/8/12/506/pdf-vor |
| article html file updated | 19 December 2017 13:08 CET | Original file | - |
| article xml uploaded. | 19 December 2017 13:07 CET | Original file | - |
| article pdf uploaded. | 19 December 2017 13:07 CET | Version of Record | https://www.mdpi.com/1999-4907/8/12/506/pdf-vor |
