| article html file updated | 8 February 2020 18:40 CET | Update | https://www.mdpi.com/2075-4442/5/4/40 |
| article html file updated | 27 September 2019 19:41 CEST | Update | - |
| article html file updated | 2 May 2019 20:48 CEST | Update | - |
| article html file updated | 2 January 2018 14:34 CET | Update | - |
| article html file updated | 17 October 2017 23:04 CEST | Original file | - |
| article xml uploaded. | 17 October 2017 14:23 CEST | Original file | https://www.mdpi.com/2075-4442/5/4/40/xml |
| article pdf uploaded. | 17 October 2017 14:23 CEST | Updated version of record | https://www.mdpi.com/2075-4442/5/4/40/pdf |
| article pdf uploaded. | 17 October 2017 14:13 CEST | Version of Record | - |
