| article html file updated | 8 February 2020 02:39 CET | Update | https://www.mdpi.com/2073-4441/9/4/246 |
| article html file updated | 24 September 2019 02:32 CEST | Update | - |
| article html file updated | 4 May 2019 04:10 CEST | Update | - |
| article html file updated | 28 April 2017 11:21 CEST | Update | - |
| article html file updated | 4 April 2017 09:18 CEST | Original file | - |
| article xml uploaded. | 4 April 2017 09:17 CEST | Original file | https://www.mdpi.com/2073-4441/9/4/246/xml |
| article pdf uploaded. | 4 April 2017 09:17 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/4/246/pdf |
| article pdf uploaded. | 31 March 2017 11:34 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/4/246/pdf-vor |
