| article html file updated | 19 March 2020 13:38 CET | Original file | https://www.mdpi.com/1996-1073/13/6/1421 |
| article pdf uploaded. | 19 March 2020 13:37 CET | Updated version of record | https://www.mdpi.com/1996-1073/13/6/1421/pdf |
| article xml uploaded. | 19 March 2020 13:37 CET | Update | https://www.mdpi.com/1996-1073/13/6/1421/xml |
| article xml file uploaded | 19 March 2020 13:36 CET | Update | N/A |
| article pdf uploaded. | 18 March 2020 15:42 CET | Version of Record | https://www.mdpi.com/1996-1073/13/6/1421/pdf-vor |
| article xml file uploaded | 18 March 2020 15:42 CET | Original file | N/A |
