| article html file updated | 7 February 2020 11:03 CET | Update | https://www.mdpi.com/1996-1073/9/7/508 |
| article html file updated | 5 May 2019 11:20 CEST | Update | N/A |
| article html file updated | 27 March 2019 09:04 CET | Update | N/A |
| article html file updated | 27 July 2016 09:41 CEST | Update | N/A |
| article html file updated | 30 June 2016 11:09 CEST | Original file | N/A |
| article xml uploaded. | 30 June 2016 11:07 CEST | Update | https://www.mdpi.com/1996-1073/9/7/508/xml |
| article pdf uploaded. | 30 June 2016 11:07 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/7/508/pdf |
