| article html file updated | 8 May 2020 18:25 CEST | Update | https://www.mdpi.com/2227-9717/8/4/481 |
| article html file updated | 21 April 2020 08:38 CEST | Original file | - |
| article pdf uploaded. | 21 April 2020 08:36 CEST | Version of Record | https://www.mdpi.com/2227-9717/8/4/481/pdf |
| article xml uploaded. | 21 April 2020 08:36 CEST | Update | https://www.mdpi.com/2227-9717/8/4/481/xml |
| article xml file uploaded | 21 April 2020 08:36 CEST | Original file | - |
