| article html file updated | 8 February 2020 08:53 CET | Update | https://www.mdpi.com/1660-3397/15/6/191 |
| article html file updated | 25 September 2019 11:33 CEST | Update | - |
| article html file updated | 3 May 2019 16:19 CEST | Update | - |
| article html file updated | 27 June 2017 11:32 CEST | Update | - |
| article html file updated | 21 June 2017 13:29 CEST | Original file | - |
| article xml uploaded. | 21 June 2017 13:27 CEST | Original file | https://www.mdpi.com/1660-3397/15/6/191/xml |
| article pdf uploaded. | 21 June 2017 13:27 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/6/191/pdf |
