| article html file updated | 14 April 2020 11:16 CEST | Original file | https://www.mdpi.com/2073-8994/12/4/617 |
| article pdf uploaded. | 14 April 2020 11:15 CEST | Version of Record | https://www.mdpi.com/2073-8994/12/4/617/pdf |
| article xml uploaded. | 14 April 2020 11:15 CEST | Update | https://www.mdpi.com/2073-8994/12/4/617/xml |
| article xml file uploaded | 14 April 2020 11:15 CEST | Original file | N/A |
