| article html file updated | 8 February 2020 02:40 CET | Update | https://www.mdpi.com/2073-4441/9/4/244 |
| article html file updated | 24 September 2019 02:40 CEST | Update | - |
| article html file updated | 4 May 2019 04:07 CEST | Update | - |
| article html file updated | 28 April 2017 11:20 CEST | Update | - |
| article html file updated | 4 April 2017 09:27 CEST | Original file | - |
| article xml uploaded. | 4 April 2017 09:25 CEST | Original file | https://www.mdpi.com/2073-4441/9/4/244/xml |
| article pdf uploaded. | 4 April 2017 09:21 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/4/244/pdf |
| article pdf uploaded. | 31 March 2017 14:50 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/4/244/pdf-vor |
