| article html file updated | 8 February 2020 03:25 CET | Update | https://www.mdpi.com/1996-1073/10/4/520 |
| article html file updated | 24 September 2019 06:48 CEST | Update | - |
| article html file updated | 4 May 2019 02:31 CEST | Update | - |
| article html file updated | 28 April 2017 06:16 CEST | Update | - |
| article html file updated | 19 April 2017 11:34 CEST | Update | - |
| article xml uploaded. | 19 April 2017 11:32 CEST | Update | https://www.mdpi.com/1996-1073/10/4/520/xml |
| article pdf uploaded. | 19 April 2017 11:32 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/4/520/pdf |
| article html file updated | 12 April 2017 12:11 CEST | Original file | - |
| article pdf uploaded. | 12 April 2017 12:09 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/520/pdf-vor |
