| article html file updated | 6 February 2020 04:17 CET | Update | https://www.mdpi.com/1422-0067/14/9/18640 |
| article html file updated | 8 May 2019 00:39 CEST | Update | - |
| article html file updated | 21 March 2019 04:21 CET | Update | - |
| article html file updated | 17 June 2015 13:05 CEST | Update | - |
| article html file updated | 31 October 2013 10:20 CET | Update | - |
| article xml file uploaded | 31 October 2013 10:20 CET | Update | https://www.mdpi.com/1422-0067/14/9/18640/xml |
| article html file updated | 14 October 2013 12:52 CEST | Original file | - |
| article xml file uploaded | 14 October 2013 12:52 CEST | Original file | - |
| article pdf uploaded. | 10 September 2013 12:14 CEST | Version of Record | https://www.mdpi.com/1422-0067/14/9/18640/pdf |
