| article html file updated | 8 February 2020 03:41 CET | Update | https://www.mdpi.com/1996-1073/10/4/540 |
| article html file updated | 24 September 2019 08:18 CEST | Update | - |
| article html file updated | 4 May 2019 02:03 CEST | Update | - |
| article html file updated | 28 April 2017 06:21 CEST | Update | - |
| article html file updated | 20 April 2017 10:28 CEST | Original file | - |
| article xml uploaded. | 20 April 2017 10:26 CEST | Original file | https://www.mdpi.com/1996-1073/10/4/540/xml |
| article pdf uploaded. | 20 April 2017 10:26 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/4/540/pdf |
| article pdf uploaded. | 15 April 2017 10:40 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/540/pdf-vor |
