| article html file updated | 7 February 2020 10:50 CET | Update | https://www.mdpi.com/1996-1073/9/7/492 |
| article html file updated | 5 May 2019 11:43 CEST | Update | - |
| article html file updated | 27 March 2019 08:40 CET | Update | - |
| article html file updated | 27 July 2016 09:30 CEST | Update | - |
| article html file updated | 27 June 2016 10:57 CEST | Original file | - |
| article xml uploaded. | 27 June 2016 10:55 CEST | Original file | https://www.mdpi.com/1996-1073/9/7/492/xml |
| article pdf uploaded. | 27 June 2016 10:55 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/7/492/pdf |
