| article html file updated | 14 February 2020 12:13 CET | Update | https://www.mdpi.com/2227-7072/7/4/69 |
| article html file updated | 31 December 2019 06:11 CET | Update | N/A |
| article html file updated | 22 November 2019 13:31 CET | Original file | N/A |
| article pdf uploaded. | 22 November 2019 13:30 CET | Version of Record | https://www.mdpi.com/2227-7072/7/4/69/pdf |
| article xml uploaded. | 22 November 2019 13:30 CET | Update | https://www.mdpi.com/2227-7072/7/4/69/xml |
| article xml file uploaded | 22 November 2019 13:30 CET | Original file | N/A |
