| article html file updated | 9 February 2020 08:37 CET | Update | https://www.mdpi.com/2226-4787/6/1/22 |
| article html file updated | 1 October 2019 06:44 CEST | Update | N/A |
| article html file updated | 1 May 2019 14:17 CEST | Update | N/A |
| article html file updated | 17 April 2019 13:54 CEST | Update | N/A |
| article html file updated | 29 March 2019 03:54 CET | Update | N/A |
| article html file updated | 27 March 2018 15:03 CEST | Update | N/A |
| article html file updated | 5 March 2018 06:22 CET | Original file | N/A |
| article xml uploaded. | 5 March 2018 06:21 CET | Original file | https://www.mdpi.com/2226-4787/6/1/22/xml |
| article pdf uploaded. | 5 March 2018 06:21 CET | Version of Record | https://www.mdpi.com/2226-4787/6/1/22/pdf |
