| article html file updated | 25 January 2024 11:57 CET | Original file | https://www.mdpi.com/2504-3900/41/1/21 |
| article pdf uploaded. | 16 January 2020 03:18 CET | Version of Record | https://www.mdpi.com/2504-3900/41/1/21/pdf |
| article xml file uploaded | 16 January 2020 03:18 CET | Original file | https://www.mdpi.com/2504-3900/41/1/21/xml |
