| article html file updated | 8 February 2020 19:44 CET | Update | https://www.mdpi.com/1999-4893/10/4/121 |
| article html file updated | 28 September 2019 02:04 CEST | Update | - |
| article html file updated | 2 May 2019 18:20 CEST | Update | - |
| article html file updated | 2 January 2018 16:35 CET | Update | - |
| article html file updated | 28 October 2017 13:03 CEST | Original file | - |
| article xml uploaded. | 28 October 2017 13:02 CEST | Original file | https://www.mdpi.com/1999-4893/10/4/121/xml |
| article pdf uploaded. | 28 October 2017 13:02 CEST | Version of Record | https://www.mdpi.com/1999-4893/10/4/121/pdf |
