| article html file updated | 8 February 2020 19:37 CET | Update | https://www.mdpi.com/2076-0825/6/4/32 |
| article html file updated | 28 September 2019 01:19 CEST | Update | - |
| article html file updated | 2 May 2019 18:36 CEST | Update | - |
| article html file updated | 2 January 2018 16:30 CET | Update | - |
| article html file updated | 30 October 2017 20:59 CET | Original file | - |
| article xml uploaded. | 30 October 2017 20:57 CET | Update | https://www.mdpi.com/2076-0825/6/4/32/xml |
| article xml uploaded. | 30 October 2017 20:57 CET | Update | - |
| article xml uploaded. | 30 October 2017 20:57 CET | Update | - |
| article xml uploaded. | 30 October 2017 20:57 CET | Original file | - |
| article pdf uploaded. | 30 October 2017 20:57 CET | Updated version of record | https://www.mdpi.com/2076-0825/6/4/32/pdf |
| article pdf uploaded. | 27 October 2017 12:55 CEST | Version of Record | https://www.mdpi.com/2076-0825/6/4/32/pdf-vor |
