| article html file updated | 17 February 2020 11:56 CET | Original file | https://www.mdpi.com/2305-7084/4/1/13 |
| article pdf uploaded. | 17 February 2020 11:55 CET | Version of Record | https://www.mdpi.com/2305-7084/4/1/13/pdf |
| article xml uploaded. | 17 February 2020 11:55 CET | Update | https://www.mdpi.com/2305-7084/4/1/13/xml |
| article xml file uploaded | 17 February 2020 11:55 CET | Original file | N/A |
