| article html file updated | 7 February 2020 14:26 CET | Update | https://www.mdpi.com/1996-1073/9/9/710 |
| article html file updated | 5 May 2019 05:06 CEST | Update | N/A |
| article html file updated | 26 September 2016 11:57 CEST | Update | N/A |
| article html file updated | 5 September 2016 09:41 CEST | Original file | N/A |
| article xml uploaded. | 5 September 2016 09:40 CEST | Update | https://www.mdpi.com/1996-1073/9/9/710/xml |
| article xml uploaded. | 5 September 2016 09:40 CEST | Original file | N/A |
| article pdf uploaded. | 5 September 2016 09:40 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/9/710/pdf |
