| article html file updated | 7 February 2020 12:48 CET | Update | https://www.mdpi.com/1996-1073/9/8/615 |
| article html file updated | 5 May 2019 08:03 CEST | Update | - |
| article html file updated | 27 March 2019 12:33 CET | Update | - |
| article html file updated | 25 August 2016 11:29 CEST | Update | - |
| article html file updated | 4 August 2016 13:20 CEST | Original file | - |
| article xml uploaded. | 4 August 2016 13:19 CEST | Original file | https://www.mdpi.com/1996-1073/9/8/615/xml |
| article pdf uploaded. | 4 August 2016 13:19 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/8/615/pdf |
