| article html file updated | 8 February 2020 03:00 CET | Update | https://www.mdpi.com/2073-4441/9/4/260 |
| article html file updated | 24 September 2019 04:29 CEST | Update | - |
| article html file updated | 4 May 2019 03:23 CEST | Update | - |
| article html file updated | 28 April 2017 11:23 CEST | Update | - |
| article html file updated | 10 April 2017 09:52 CEST | Original file | - |
| article xml uploaded. | 10 April 2017 09:51 CEST | Update | https://www.mdpi.com/2073-4441/9/4/260/xml |
| article pdf uploaded. | 10 April 2017 09:51 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/4/260/pdf |
| article pdf uploaded. | 6 April 2017 10:46 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/4/260/pdf-vor |
