| article html file updated | 6 February 2020 07:30 CET | Update | https://www.mdpi.com/1996-1944/7/3/1444 |
| article html file updated | 7 May 2019 18:09 CEST | Update | - |
| article html file updated | 21 March 2019 12:55 CET | Update | - |
| article html file updated | 19 August 2015 21:33 CEST | Update | - |
| article html file updated | 3 June 2014 14:30 CEST | Original file | - |
| article xml file uploaded | 3 June 2014 14:30 CEST | Original file | https://www.mdpi.com/1996-1944/7/3/1444/xml |
| article pdf uploaded. | 25 February 2014 11:32 CET | Version of Record | https://www.mdpi.com/1996-1944/7/3/1444/pdf |
