| article html file updated | 6 February 2020 04:03 CET | Update | https://www.mdpi.com/1422-0067/14/9/17664 |
| article html file updated | 8 May 2019 01:08 CEST | Update | - |
| article html file updated | 21 March 2019 03:45 CET | Update | - |
| article html file updated | 17 June 2015 12:45 CEST | Update | - |
| article html file updated | 31 October 2013 10:03 CET | Update | - |
| article xml file uploaded | 31 October 2013 10:03 CET | Update | https://www.mdpi.com/1422-0067/14/9/17664/xml |
| article html file updated | 14 October 2013 12:26 CEST | Original file | - |
| article xml file uploaded | 14 October 2013 12:26 CEST | Original file | - |
| article pdf uploaded. | 28 August 2013 15:26 CEST | Version of Record | https://www.mdpi.com/1422-0067/14/9/17664/pdf |
