| article html file updated | 1 May 2020 05:26 CEST | Original file | https://www.mdpi.com/2304-6732/7/2/30 |
| article pdf uploaded. | 1 May 2020 05:24 CEST | Updated version of record | https://www.mdpi.com/2304-6732/7/2/30/pdf |
| article xml uploaded. | 1 May 2020 05:24 CEST | Update | https://www.mdpi.com/2304-6732/7/2/30/xml |
| article xml file uploaded | 1 May 2020 05:24 CEST | Update | - |
| article pdf uploaded. | 19 April 2020 11:15 CEST | Version of Record | https://www.mdpi.com/2304-6732/7/2/30/pdf-vor |
| article xml file uploaded | 19 April 2020 11:15 CEST | Original file | - |
