| article html file updated | 11 February 2020 23:26 CET | Update | https://www.mdpi.com/1996-1944/12/6/921 |
| article html file updated | 26 April 2019 00:40 CEST | Update | - |
| article html file updated | 11 April 2019 19:40 CEST | Update | - |
| article html file updated | 9 April 2019 19:26 CEST | Update | - |
| article html file updated | 4 April 2019 16:28 CEST | Update | - |
| article html file updated | 20 March 2019 07:05 CET | Original file | - |
| article pdf uploaded. | 20 March 2019 06:11 CET | Version of Record | https://www.mdpi.com/1996-1944/12/6/921/pdf |
| article xml uploaded. | 20 March 2019 06:11 CET | Update | https://www.mdpi.com/1996-1944/12/6/921/xml |
| article xml file uploaded | 20 March 2019 06:11 CET | Original file | - |
