| article html file updated | 7 February 2020 10:07 CET | Update | https://www.mdpi.com/1996-1944/9/6/464 |
| article html file updated | 5 May 2019 13:02 CEST | Update | N/A |
| article html file updated | 27 March 2019 07:24 CET | Update | N/A |
| article html file updated | 28 June 2016 12:22 CEST | Update | N/A |
| article html file updated | 14 June 2016 22:47 CEST | Original file | N/A |
| article xml uploaded. | 14 June 2016 10:02 CEST | Original file | https://www.mdpi.com/1996-1944/9/6/464/xml |
| article pdf uploaded. | 14 June 2016 10:02 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/6/464/pdf |
