| article html file updated | 8 February 2020 17:50 CET | Update | https://www.mdpi.com/2073-445X/6/4/66 |
| article html file updated | 27 September 2019 13:33 CEST | Update | - |
| article html file updated | 2 May 2019 22:40 CEST | Update | - |
| article html file updated | 2 January 2018 14:15 CET | Update | - |
| article html file updated | 5 October 2017 13:34 CEST | Original file | - |
| article xml uploaded. | 5 October 2017 13:32 CEST | Original file | https://www.mdpi.com/2073-445X/6/4/66/xml |
| article pdf uploaded. | 5 October 2017 13:32 CEST | Version of Record | https://www.mdpi.com/2073-445X/6/4/66/pdf |
