| article html file updated | 30 March 2020 13:38 CEST | Original file | https://www.mdpi.com/2076-0752/9/2/45 |
| article pdf uploaded. | 30 March 2020 13:37 CEST | Version of Record | https://www.mdpi.com/2076-0752/9/2/45/pdf |
| article xml uploaded. | 30 March 2020 13:37 CEST | Update | https://www.mdpi.com/2076-0752/9/2/45/xml |
| article xml file uploaded | 30 March 2020 13:37 CEST | Original file | N/A |
