| article html file updated | 8 February 2020 19:19 CET | Update | https://www.mdpi.com/2073-431X/6/4/28 |
| article html file updated | 27 September 2019 23:31 CEST | Update | - |
| article html file updated | 2 May 2019 19:17 CEST | Update | - |
| article html file updated | 2 January 2018 16:56 CET | Update | - |
| article html file updated | 24 October 2017 12:42 CEST | Original file | - |
| article xml uploaded. | 24 October 2017 12:40 CEST | Update | https://www.mdpi.com/2073-431X/6/4/28/xml |
| article xml uploaded. | 24 October 2017 12:40 CEST | Update | - |
| article xml uploaded. | 24 October 2017 12:40 CEST | Original file | - |
| article pdf uploaded. | 24 October 2017 12:40 CEST | Version of Record | https://www.mdpi.com/2073-431X/6/4/28/pdf |
