| article html file updated | 8 February 2020 03:44 CET | Update | https://www.mdpi.com/1999-4907/8/4/123 |
| article html file updated | 24 September 2019 08:38 CEST | Update | - |
| article html file updated | 4 May 2019 01:55 CEST | Update | - |
| article html file updated | 28 April 2017 06:43 CEST | Update | - |
| article html file updated | 19 April 2017 03:42 CEST | Original file | - |
| article xml uploaded. | 19 April 2017 03:41 CEST | Original file | https://www.mdpi.com/1999-4907/8/4/123/xml |
| article pdf uploaded. | 19 April 2017 03:41 CEST | Updated version of record | https://www.mdpi.com/1999-4907/8/4/123/pdf |
| article pdf uploaded. | 17 April 2017 13:44 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/4/123/pdf-vor |
