| article html file updated | 6 February 2020 02:40 CET | Update | https://www.mdpi.com/1422-0067/14/6/12620 |
| article html file updated | 8 May 2019 03:59 CEST | Update | - |
| article html file updated | 20 March 2019 23:52 CET | Update | - |
| article html file updated | 17 June 2015 10:19 CEST | Update | - |
| article html file updated | 30 July 2013 13:52 CEST | Update | - |
| article xml file uploaded | 30 July 2013 13:51 CEST | Update | https://www.mdpi.com/1422-0067/14/6/12620/xml |
| article html file updated | 19 July 2013 10:54 CEST | Original file | - |
| article xml file uploaded | 19 July 2013 10:53 CEST | Original file | - |
| article pdf uploaded. | 17 June 2013 14:13 CEST | Version of Record | https://www.mdpi.com/1422-0067/14/6/12620/pdf |
