| article html file updated | 9 February 2020 00:38 CET | Update | https://www.mdpi.com/1999-4907/8/12/503 |
| article html file updated | 29 September 2019 08:26 CEST | Update | - |
| article html file updated | 2 May 2019 07:22 CEST | Update | - |
| article html file updated | 18 April 2019 05:14 CEST | Update | - |
| article html file updated | 2 January 2018 17:04 CET | Update | - |
| article html file updated | 21 December 2017 07:43 CET | Update | - |
| article xml uploaded. | 21 December 2017 07:42 CET | Update | https://www.mdpi.com/1999-4907/8/12/503/xml |
| article pdf uploaded. | 21 December 2017 07:42 CET | Updated version of record | https://www.mdpi.com/1999-4907/8/12/503/pdf |
| article pdf uploaded. | 21 December 2017 06:53 CET | Updated version of record | https://www.mdpi.com/1999-4907/8/12/503/pdf-vor |
| article html file updated | 20 December 2017 09:14 CET | Original file | - |
| article xml uploaded. | 20 December 2017 09:12 CET | Original file | - |
| article pdf uploaded. | 20 December 2017 09:12 CET | Version of Record | https://www.mdpi.com/1999-4907/8/12/503/pdf-vor |
