| article html file updated | 6 February 2020 07:51 CET | Update | https://www.mdpi.com/2073-4360/6/3/706 |
| article html file updated | 7 May 2019 17:25 CEST | Update | - |
| article html file updated | 21 March 2019 13:46 CET | Update | - |
| article html file updated | 19 August 2015 23:28 CEST | Update | - |
| article html file updated | 24 June 2014 12:23 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:22 CEST | Original file | https://www.mdpi.com/2073-4360/6/3/706/xml |
| article pdf uploaded. | 12 March 2014 09:53 CET | Version of Record | https://www.mdpi.com/2073-4360/6/3/706/pdf |
