| article html file updated | 16 June 2020 14:24 CEST | Original file | https://www.mdpi.com/2076-0752/9/2/71 |
| article pdf uploaded. | 16 June 2020 14:23 CEST | Version of Record | https://www.mdpi.com/2076-0752/9/2/71/pdf |
| article xml uploaded. | 16 June 2020 14:23 CEST | Update | https://www.mdpi.com/2076-0752/9/2/71/xml |
| article xml file uploaded | 16 June 2020 14:23 CEST | Original file | N/A |
