| article html file updated | 7 February 2020 09:51 CET | Update | https://www.mdpi.com/2077-1444/7/6/71 |
| article html file updated | 5 May 2019 13:32 CEST | Update | - |
| article html file updated | 27 March 2019 06:54 CET | Update | - |
| article html file updated | 29 June 2016 11:29 CEST | Update | - |
| article html file updated | 7 June 2016 11:06 CEST | Original file | - |
| article xml uploaded. | 7 June 2016 11:05 CEST | Original file | https://www.mdpi.com/2077-1444/7/6/71/xml |
| article pdf uploaded. | 7 June 2016 11:05 CEST | Version of Record | https://www.mdpi.com/2077-1444/7/6/71/pdf |
