| article html file updated | 13 February 2020 16:31 CET | Update | https://www.mdpi.com/2227-9717/7/9/609 |
| article html file updated | 25 September 2019 20:02 CEST | Update | N/A |
| article html file updated | 10 September 2019 10:32 CEST | Original file | N/A |
| article pdf uploaded. | 10 September 2019 10:30 CEST | Version of Record | https://www.mdpi.com/2227-9717/7/9/609/pdf |
| article xml uploaded. | 10 September 2019 10:30 CEST | Update | https://www.mdpi.com/2227-9717/7/9/609/xml |
| article xml file uploaded | 10 September 2019 10:30 CEST | Original file | N/A |
