| article html file updated | 24 January 2024 14:57 CET | Original file | https://www.mdpi.com/2504-3900/4/1/40 |
| article pdf uploaded. | 18 June 2019 12:28 CEST | Updated version of record | https://www.mdpi.com/2504-3900/4/1/40/pdf |
| article pdf uploaded. | 1 February 2019 10:21 CET | Version of Record | https://www.mdpi.com/2504-3900/4/1/40/pdf-vor |
| article xml file uploaded | 1 February 2019 10:21 CET | Original file | https://www.mdpi.com/2504-3900/4/1/40/xml |
