| article html file updated | 8 April 2020 10:59 CEST | Original file | https://www.mdpi.com/2304-6775/8/2/19 |
| article pdf uploaded. | 8 April 2020 10:58 CEST | Version of Record | https://www.mdpi.com/2304-6775/8/2/19/pdf |
| article xml uploaded. | 8 April 2020 10:58 CEST | Update | https://www.mdpi.com/2304-6775/8/2/19/xml |
| article xml file uploaded | 8 April 2020 10:58 CEST | Original file | N/A |
