| article html file updated | 8 February 2020 03:59 CET | Update | https://www.mdpi.com/1996-1073/10/4/561 |
| article html file updated | 24 September 2019 10:06 CEST | Update | - |
| article html file updated | 4 May 2019 01:28 CEST | Update | - |
| article html file updated | 28 April 2017 06:27 CEST | Update | - |
| article html file updated | 20 April 2017 11:30 CEST | Original file | - |
| article xml uploaded. | 20 April 2017 11:28 CEST | Original file | https://www.mdpi.com/1996-1073/10/4/561/xml |
| article pdf uploaded. | 20 April 2017 11:28 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/561/pdf |
