| article html file updated | 7 February 2020 12:47 CET | Update | https://www.mdpi.com/1996-1073/9/8/612 |
| article html file updated | 5 May 2019 08:06 CEST | Update | N/A |
| article html file updated | 27 March 2019 12:29 CET | Update | N/A |
| article html file updated | 25 August 2016 11:29 CEST | Update | N/A |
| article html file updated | 3 August 2016 14:25 CEST | Original file | N/A |
| article xml uploaded. | 3 August 2016 14:23 CEST | Update | https://www.mdpi.com/1996-1073/9/8/612/xml |
| article pdf uploaded. | 3 August 2016 14:23 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/8/612/pdf |
