| article html file updated | 7 February 2020 11:24 CET | Update | https://www.mdpi.com/1996-1944/9/7/549 |
| article html file updated | 5 May 2019 10:42 CEST | Update | N/A |
| article html file updated | 27 March 2019 09:43 CET | Update | N/A |
| article html file updated | 29 July 2016 10:43 CEST | Update | N/A |
| article html file updated | 8 July 2016 11:35 CEST | Original file | N/A |
| article xml uploaded. | 8 July 2016 11:34 CEST | Original file | https://www.mdpi.com/1996-1944/9/7/549/xml |
| article pdf uploaded. | 8 July 2016 11:34 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/7/549/pdf |
