| article html file updated | 7 February 2020 10:51 CET | Update | https://www.mdpi.com/1996-1944/9/7/521 |
| article html file updated | 5 May 2019 11:41 CEST | Update | - |
| article html file updated | 27 March 2019 08:42 CET | Update | - |
| article html file updated | 29 July 2016 10:33 CEST | Update | - |
| article html file updated | 28 June 2016 03:56 CEST | Update | - |
| article xml uploaded. | 28 June 2016 03:54 CEST | Update | https://www.mdpi.com/1996-1944/9/7/521/xml |
| article pdf uploaded. | 28 June 2016 03:54 CEST | Updated version of record | https://www.mdpi.com/1996-1944/9/7/521/pdf |
| article html file updated | 27 June 2016 14:20 CEST | Original file | - |
| article pdf uploaded. | 27 June 2016 14:18 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/7/521/pdf-vor |
