| article html file updated | 8 February 2020 19:01 CET | Update | https://www.mdpi.com/2073-445X/6/4/71 |
| article html file updated | 27 September 2019 21:46 CEST | Update | - |
| article html file updated | 2 May 2019 19:59 CEST | Update | - |
| article html file updated | 2 January 2018 14:16 CET | Update | - |
| article html file updated | 24 October 2017 11:32 CEST | Update | - |
| article xml uploaded. | 24 October 2017 11:31 CEST | Update | https://www.mdpi.com/2073-445X/6/4/71/xml |
| article pdf uploaded. | 24 October 2017 11:31 CEST | Updated version of record | https://www.mdpi.com/2073-445X/6/4/71/pdf |
| article html file updated | 20 October 2017 13:25 CEST | Original file | - |
| article xml uploaded. | 20 October 2017 13:24 CEST | Original file | - |
| article pdf uploaded. | 20 October 2017 13:24 CEST | Version of Record | https://www.mdpi.com/2073-445X/6/4/71/pdf-vor |
