| article html file updated | 9 February 2020 12:48 CET | Update | https://www.mdpi.com/1660-3397/16/4/121 |
| article html file updated | 2 October 2019 08:32 CEST | Update | - |
| article html file updated | 1 May 2019 05:32 CEST | Update | - |
| article html file updated | 17 April 2019 05:42 CEST | Update | - |
| article html file updated | 29 March 2019 13:20 CET | Update | - |
| article html file updated | 1 May 2018 12:03 CEST | Update | - |
| article html file updated | 6 April 2018 11:18 CEST | Original file | - |
| article xml uploaded. | 6 April 2018 11:16 CEST | Update | https://www.mdpi.com/1660-3397/16/4/121/xml |
| article pdf uploaded. | 6 April 2018 11:16 CEST | Version of Record | https://www.mdpi.com/1660-3397/16/4/121/pdf |
