| article html file updated | 7 February 2020 19:09 CET | Update | https://www.mdpi.com/2072-6694/8/12/109 |
| article html file updated | 22 September 2019 09:03 CEST | Update | - |
| article html file updated | 4 May 2019 20:13 CEST | Update | - |
| article html file updated | 27 December 2016 11:54 CET | Update | - |
| article html file updated | 6 December 2016 11:14 CET | Original file | - |
| article xml uploaded. | 6 December 2016 11:13 CET | Update | https://www.mdpi.com/2072-6694/8/12/109/xml |
| article xml uploaded. | 6 December 2016 11:13 CET | Original file | - |
| article pdf uploaded. | 6 December 2016 11:13 CET | Version of Record | https://www.mdpi.com/2072-6694/8/12/109/pdf |
