| article html file updated | 7 February 2020 11:50 CET | Update | https://www.mdpi.com/1996-1073/9/7/549 |
| article html file updated | 5 May 2019 09:54 CEST | Update | - |
| article html file updated | 27 March 2019 10:33 CET | Update | - |
| article html file updated | 27 July 2016 10:00 CEST | Update | - |
| article html file updated | 18 July 2016 08:28 CEST | Original file | - |
| article xml uploaded. | 18 July 2016 08:27 CEST | Original file | https://www.mdpi.com/1996-1073/9/7/549/xml |
| article pdf uploaded. | 18 July 2016 08:27 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/7/549/pdf |
