| article html file updated | 8 February 2020 02:43 CET | Update | https://www.mdpi.com/1996-1073/10/4/449 |
| article html file updated | 24 September 2019 02:56 CEST | Update | - |
| article html file updated | 4 May 2019 04:00 CEST | Update | - |
| article html file updated | 28 April 2017 06:00 CEST | Update | - |
| article html file updated | 1 April 2017 04:30 CEST | Original file | - |
| article xml uploaded. | 1 April 2017 04:29 CEST | Update | https://www.mdpi.com/1996-1073/10/4/449/xml |
| article pdf uploaded. | 1 April 2017 04:29 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/449/pdf |
