| article html file updated | 11 February 2020 06:59 CET | Update | https://www.mdpi.com/1660-3397/17/1/30 |
| article html file updated | 12 October 2019 22:36 CEST | Update | - |
| article html file updated | 27 April 2019 10:51 CEST | Update | - |
| article html file updated | 13 April 2019 06:49 CEST | Update | - |
| article html file updated | 2 April 2019 22:46 CEST | Update | - |
| article html file updated | 29 January 2019 05:46 CET | Update | - |
| article html file updated | 6 January 2019 10:45 CET | Original file | - |
| article pdf uploaded. | 6 January 2019 10:44 CET | Version of Record | https://www.mdpi.com/1660-3397/17/1/30/pdf |
| article xml uploaded. | 6 January 2019 10:44 CET | Update | https://www.mdpi.com/1660-3397/17/1/30/xml |
| article xml file uploaded | 6 January 2019 10:44 CET | Original file | - |
