| article html file updated | 7 February 2020 14:48 CET | Update | https://www.mdpi.com/1999-4915/8/9/249 |
| article html file updated | 5 May 2019 04:25 CEST | Update | N/A |
| article html file updated | 26 September 2016 08:32 CEST | Update | N/A |
| article html file updated | 10 September 2016 10:37 CEST | Original file | N/A |
| article xml uploaded. | 10 September 2016 10:35 CEST | Update | https://www.mdpi.com/1999-4915/8/9/249/xml |
| article xml uploaded. | 10 September 2016 10:35 CEST | Original file | N/A |
| article pdf uploaded. | 10 September 2016 10:35 CEST | Version of Record | https://www.mdpi.com/1999-4915/8/9/249/pdf |
