| article html file updated | 25 January 2024 11:06 CET | Original file | https://www.mdpi.com/2504-3900/30/1/42 |
| article pdf uploaded. | 25 December 2019 04:57 CET | Version of Record | https://www.mdpi.com/2504-3900/30/1/42/pdf |
| article xml file uploaded | 25 December 2019 04:57 CET | Original file | https://www.mdpi.com/2504-3900/30/1/42/xml |
