| article html file updated | 8 February 2020 03:24 CET | Update | https://www.mdpi.com/2073-4441/9/4/273 |
| article html file updated | 24 September 2019 06:42 CEST | Update | - |
| article html file updated | 4 May 2019 02:33 CEST | Update | - |
| article html file updated | 28 April 2017 11:27 CEST | Update | - |
| article html file updated | 14 April 2017 08:21 CEST | Original file | - |
| article xml uploaded. | 14 April 2017 08:19 CEST | Update | https://www.mdpi.com/2073-4441/9/4/273/xml |
| article pdf uploaded. | 14 April 2017 08:19 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/4/273/pdf |
| article pdf uploaded. | 12 April 2017 10:30 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/4/273/pdf-vor |
