| article html file updated | 8 February 2020 19:16 CET | Update | https://new.mdpi.com/2079-9721/5/4/24 |
| article html file updated | 27 September 2019 23:13 CEST | Update | - |
| article html file updated | 2 May 2019 19:24 CEST | Update | - |
| article html file updated | 2 January 2018 20:44 CET | Update | - |
| article html file updated | 25 October 2017 06:45 CEST | Original file | - |
| article xml uploaded. | 25 October 2017 06:44 CEST | Original file | https://new.mdpi.com/2079-9721/5/4/24/xml |
| article pdf uploaded. | 25 October 2017 06:44 CEST | Updated version of record | https://new.mdpi.com/2079-9721/5/4/24/pdf |
| article pdf uploaded. | 24 October 2017 10:52 CEST | Version of Record | https://new.mdpi.com/2079-9721/5/4/24/pdf-vor |
