| article html file updated | 9 February 2020 01:35 CET | Update | https://www.mdpi.com/1996-1944/11/1/56 |
| article html file updated | 29 September 2019 13:56 CEST | Update | - |
| article html file updated | 2 May 2019 05:18 CEST | Update | - |
| article html file updated | 18 April 2019 03:20 CEST | Update | - |
| article html file updated | 28 March 2019 12:07 CET | Update | - |
| article html file updated | 1 February 2018 14:21 CET | Update | - |
| article html file updated | 30 December 2017 10:49 CET | Original file | - |
| article xml uploaded. | 30 December 2017 10:47 CET | Update | https://www.mdpi.com/1996-1944/11/1/56/xml |
| article xml uploaded. | 30 December 2017 10:47 CET | Update | - |
| article xml uploaded. | 30 December 2017 10:47 CET | Update | - |
| article xml uploaded. | 30 December 2017 10:47 CET | Original file | - |
| article pdf uploaded. | 30 December 2017 10:47 CET | Version of Record | https://www.mdpi.com/1996-1944/11/1/56/pdf |
