| article html file updated | 7 February 2020 01:26 CET | Update | https://www.mdpi.com/2077-1444/6/4/1346 |
| article html file updated | 6 May 2019 06:35 CEST | Update | - |
| article html file updated | 26 March 2019 15:10 CET | Original file | - |
| article pdf uploaded. | 27 November 2015 11:57 CET | Version of Record | https://www.mdpi.com/2077-1444/6/4/1346/pdf |
| article xml uploaded. | 27 November 2015 11:57 CET | Original file | https://www.mdpi.com/2077-1444/6/4/1346/xml |
