| article html file updated | 7 February 2020 12:15 CET | Update | https://www.mdpi.com/1996-1073/9/8/577 |
| article html file updated | 5 May 2019 09:09 CEST | Update | - |
| article html file updated | 27 March 2019 11:18 CET | Update | - |
| article html file updated | 25 August 2016 11:20 CEST | Update | - |
| article html file updated | 25 July 2016 08:49 CEST | Original file | - |
| article xml uploaded. | 25 July 2016 08:47 CEST | Update | https://www.mdpi.com/1996-1073/9/8/577/xml |
| article pdf uploaded. | 25 July 2016 08:47 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/8/577/pdf |
