| article html file updated | 12 February 2020 04:01 CET | Update | https://www.mdpi.com/2227-9067/6/4/58 |
| article html file updated | 18 October 2019 00:13 CEST | Update | - |
| article html file updated | 8 May 2019 20:10 CEST | Update | - |
| article html file updated | 26 April 2019 06:00 CEST | Original file | - |
| article pdf uploaded. | 26 April 2019 05:59 CEST | Updated version of record | https://www.mdpi.com/2227-9067/6/4/58/pdf |
| article xml uploaded. | 26 April 2019 05:59 CEST | Update | https://www.mdpi.com/2227-9067/6/4/58/xml |
| article xml file uploaded | 26 April 2019 05:58 CEST | Update | - |
| article pdf uploaded. | 9 April 2019 13:48 CEST | Version of Record | https://www.mdpi.com/2227-9067/6/4/58/pdf-vor |
| article xml file uploaded | 9 April 2019 13:48 CEST | Original file | - |
