| article html file updated | 7 February 2020 09:23 CET | Update | https://www.mdpi.com/1996-1944/9/6/419 |
| article html file updated | 5 May 2019 14:28 CEST | Update | - |
| article html file updated | 27 March 2019 05:57 CET | Update | - |
| article html file updated | 28 June 2016 12:09 CEST | Update | - |
| article html file updated | 27 May 2016 11:57 CEST | Original file | - |
| article xml uploaded. | 27 May 2016 10:46 CEST | Original file | https://www.mdpi.com/1996-1944/9/6/419/xml |
| article pdf uploaded. | 27 May 2016 10:46 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/6/419/pdf |
