| article html file updated | 2 April 2020 08:55 CEST | Update | https://www.mdpi.com/2227-7072/8/1/2 |
| article html file updated | 15 February 2020 03:00 CET | Update | N/A |
| article html file updated | 15 January 2020 11:23 CET | Original file | N/A |
| article pdf uploaded. | 15 January 2020 11:22 CET | Version of Record | https://www.mdpi.com/2227-7072/8/1/2/pdf |
| article xml uploaded. | 15 January 2020 11:22 CET | Update | https://www.mdpi.com/2227-7072/8/1/2/xml |
| article xml file uploaded | 15 January 2020 11:22 CET | Original file | N/A |
