| article html file updated | 7 February 2020 12:46 CET | Update | https://www.mdpi.com/1996-1073/9/8/613 |
| article html file updated | 5 May 2019 08:08 CEST | Update | - |
| article html file updated | 27 March 2019 12:26 CET | Update | - |
| article html file updated | 25 August 2016 11:29 CEST | Update | - |
| article html file updated | 3 August 2016 13:56 CEST | Original file | - |
| article xml uploaded. | 3 August 2016 13:54 CEST | Update | https://www.mdpi.com/1996-1073/9/8/613/xml |
| article pdf uploaded. | 3 August 2016 13:54 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/8/613/pdf |
