| article html file updated | 16 April 2020 15:05 CEST | Original file | https://www.mdpi.com/2076-0752/9/2/49 |
| article pdf uploaded. | 16 April 2020 15:03 CEST | Version of Record | https://www.mdpi.com/2076-0752/9/2/49/pdf |
| article xml uploaded. | 16 April 2020 15:03 CEST | Update | https://www.mdpi.com/2076-0752/9/2/49/xml |
| article xml file uploaded | 16 April 2020 15:03 CEST | Original file | - |
