| article html file updated | 25 January 2024 11:46 CET | Original file | https://www.mdpi.com/2504-3900/37/1/4 |
| article pdf uploaded. | 13 December 2019 07:56 CET | Version of Record | https://www.mdpi.com/2504-3900/37/1/4/pdf |
| article xml file uploaded | 13 December 2019 07:56 CET | Original file | https://www.mdpi.com/2504-3900/37/1/4/xml |
