| article html file updated | 14 February 2020 15:02 CET | Update | https://www.mdpi.com/1999-5903/11/12/250 |
| article html file updated | 31 December 2019 15:27 CET | Update | - |
| article html file updated | 2 December 2019 11:19 CET | Original file | - |
| article pdf uploaded. | 2 December 2019 11:17 CET | Version of Record | https://www.mdpi.com/1999-5903/11/12/250/pdf |
| article xml uploaded. | 2 December 2019 11:17 CET | Update | https://www.mdpi.com/1999-5903/11/12/250/xml |
| article xml file uploaded | 2 December 2019 11:17 CET | Original file | - |
