| article html file updated | 7 February 2020 09:55 CET | Update | https://www.mdpi.com/2077-1444/7/6/72 |
| article html file updated | 5 May 2019 13:26 CEST | Update | - |
| article html file updated | 27 March 2019 07:01 CET | Update | - |
| article html file updated | 29 June 2016 11:31 CEST | Update | - |
| article html file updated | 8 June 2016 11:20 CEST | Original file | - |
| article xml uploaded. | 8 June 2016 11:18 CEST | Original file | https://www.mdpi.com/2077-1444/7/6/72/xml |
| article pdf uploaded. | 8 June 2016 11:18 CEST | Version of Record | https://www.mdpi.com/2077-1444/7/6/72/pdf |
