| article html file updated | 8 February 2020 23:40 CET | Update | https://www.mdpi.com/2412-3811/2/4/22 |
| article html file updated | 2 May 2019 09:28 CEST | Update | N/A |
| article html file updated | 18 April 2019 07:10 CEST | Update | N/A |
| article html file updated | 11 December 2017 11:04 CET | Original file | N/A |
| article xml uploaded. | 11 December 2017 11:03 CET | Original file | https://www.mdpi.com/2412-3811/2/4/22/xml |
| article pdf uploaded. | 11 December 2017 11:03 CET | Updated version of record | https://www.mdpi.com/2412-3811/2/4/22/pdf |
| article pdf uploaded. | 10 December 2017 11:23 CET | Version of Record | https://www.mdpi.com/2412-3811/2/4/22/pdf-vor |
