| article html file updated | 8 February 2020 08:07 CET | Update | https://www.mdpi.com/1660-3397/15/6/173 |
| article html file updated | 25 September 2019 07:31 CEST | Update | - |
| article html file updated | 3 May 2019 17:47 CEST | Update | - |
| article html file updated | 27 June 2017 11:29 CEST | Update | - |
| article html file updated | 12 June 2017 13:07 CEST | Original file | - |
| article xml uploaded. | 12 June 2017 13:05 CEST | Original file | https://www.mdpi.com/1660-3397/15/6/173/xml |
| article pdf uploaded. | 12 June 2017 13:05 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/6/173/pdf |
