| article html file updated | 8 February 2020 03:44 CET | Update | https://www.mdpi.com/2073-4441/9/4/280 |
| article html file updated | 24 September 2019 08:38 CEST | Update | - |
| article html file updated | 4 May 2019 01:56 CEST | Update | - |
| article html file updated | 28 April 2017 11:29 CEST | Update | - |
| article html file updated | 18 April 2017 10:30 CEST | Original file | - |
| article xml uploaded. | 18 April 2017 10:28 CEST | Update | https://www.mdpi.com/2073-4441/9/4/280/xml |
| article pdf uploaded. | 18 April 2017 10:28 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/4/280/pdf |
| article pdf uploaded. | 17 April 2017 11:44 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/4/280/pdf-vor |
