| article html file updated | 8 February 2020 02:50 CET | Update | https://www.mdpi.com/1996-1073/10/4/472 |
| article html file updated | 24 September 2019 03:39 CEST | Update | - |
| article html file updated | 4 May 2019 03:45 CEST | Update | - |
| article html file updated | 28 April 2017 06:04 CEST | Update | - |
| article html file updated | 3 April 2017 09:04 CEST | Original file | - |
| article xml uploaded. | 3 April 2017 09:02 CEST | Update | https://www.mdpi.com/1996-1073/10/4/472/xml |
| article pdf uploaded. | 3 April 2017 09:02 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/472/pdf |
