| article html file updated | 7 February 2020 06:53 CET | Update | https://www.mdpi.com/1996-1944/9/4/272 |
| article html file updated | 5 May 2019 19:28 CEST | Update | - |
| article html file updated | 27 March 2019 01:08 CET | Update | - |
| article html file updated | 28 April 2016 11:01 CEST | Update | - |
| article html file updated | 6 April 2016 14:05 CEST | Original file | - |
| article xml uploaded. | 6 April 2016 14:04 CEST | Original file | https://www.mdpi.com/1996-1944/9/4/272/xml |
| article pdf uploaded. | 6 April 2016 14:04 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/4/272/pdf |
