| article html file updated | 8 February 2020 23:10 CET | Update | https://www.mdpi.com/2076-0760/6/4/148 |
| article html file updated | 29 September 2019 00:02 CEST | Update | - |
| article html file updated | 2 May 2019 10:34 CEST | Update | - |
| article html file updated | 18 April 2019 08:11 CEST | Update | - |
| article html file updated | 7 December 2017 10:47 CET | Original file | - |
| article xml uploaded. | 7 December 2017 10:45 CET | Original file | https://www.mdpi.com/2076-0760/6/4/148/xml |
| article pdf uploaded. | 7 December 2017 10:45 CET | Updated version of record | https://www.mdpi.com/2076-0760/6/4/148/pdf |
| article pdf uploaded. | 5 December 2017 14:02 CET | Version of Record | https://www.mdpi.com/2076-0760/6/4/148/pdf-vor |
