| article html file updated | 7 February 2020 23:28 CET | Update | https://www.mdpi.com/2297-8747/22/1/18 |
| article html file updated | 23 September 2019 08:19 CEST | Update | N/A |
| article html file updated | 4 May 2019 11:07 CEST | Update | N/A |
| article html file updated | 15 February 2017 11:58 CET | Update | N/A |
| article html file updated | 15 February 2017 11:58 CET | Original file | N/A |
| article xml uploaded. | 15 February 2017 11:57 CET | Original file | https://www.mdpi.com/2297-8747/22/1/18/xml |
| article pdf uploaded. | 15 February 2017 11:57 CET | Version of Record | https://www.mdpi.com/2297-8747/22/1/18/pdf |
