| article html file updated | 7 February 2020 13:18 CET | Update | https://www.mdpi.com/1996-1073/9/8/641 |
| article html file updated | 5 May 2019 07:10 CEST | Update | - |
| article html file updated | 27 March 2019 13:35 CET | Update | - |
| article html file updated | 25 August 2016 11:36 CEST | Update | - |
| article html file updated | 13 August 2016 11:04 CEST | Original file | - |
| article xml uploaded. | 13 August 2016 11:02 CEST | Update | https://www.mdpi.com/1996-1073/9/8/641/xml |
| article xml uploaded. | 13 August 2016 11:02 CEST | Original file | - |
| article pdf uploaded. | 13 August 2016 11:02 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/8/641/pdf |
