| article html file updated | 7 February 2020 10:27 CET | Update | https://www.mdpi.com/1996-1944/9/6/492 |
| article html file updated | 5 May 2019 12:25 CEST | Update | - |
| article html file updated | 27 March 2019 07:59 CET | Update | - |
| article html file updated | 28 June 2016 12:28 CEST | Update | - |
| article html file updated | 20 June 2016 15:26 CEST | Original file | - |
| article xml uploaded. | 20 June 2016 15:24 CEST | Original file | https://www.mdpi.com/1996-1944/9/6/492/xml |
| article pdf uploaded. | 20 June 2016 15:24 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/6/492/pdf |
