| article html file updated | 26 September 2022 11:19 CEST | Original file | https://www.mdpi.com/2504-3900/2/23/1420 |
| article pdf uploaded. | 15 January 2019 04:46 CET | Updated version of record | https://www.mdpi.com/2504-3900/2/23/1420/pdf |
| article pdf uploaded. | 15 January 2019 04:43 CET | Version of Record | https://www.mdpi.com/2504-3900/2/23/1420/pdf-vor |
