| article html file updated | 8 February 2020 02:44 CET | Update | https://www.mdpi.com/1996-1073/10/4/447 |
| article html file updated | 24 September 2019 03:02 CEST | Update | - |
| article html file updated | 4 May 2019 03:57 CEST | Update | - |
| article html file updated | 28 April 2017 05:59 CEST | Update | - |
| article html file updated | 1 April 2017 10:49 CEST | Original file | - |
| article xml uploaded. | 1 April 2017 10:48 CEST | Update | https://www.mdpi.com/1996-1073/10/4/447/xml |
| article pdf uploaded. | 1 April 2017 10:48 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/447/pdf |
