| article html file updated | 6 February 2020 04:08 CET | Update | https://www.mdpi.com/1422-0067/14/9/18041 |
| article html file updated | 8 May 2019 00:58 CEST | Update | - |
| article html file updated | 21 March 2019 03:58 CET | Update | - |
| article html file updated | 17 June 2015 12:51 CEST | Update | - |
| article html file updated | 31 October 2013 10:09 CET | Update | - |
| article xml file uploaded | 31 October 2013 10:09 CET | Update | https://www.mdpi.com/1422-0067/14/9/18041/xml |
| article html file updated | 14 October 2013 12:39 CEST | Original file | - |
| article xml file uploaded | 14 October 2013 12:39 CEST | Original file | - |
| article pdf uploaded. | 3 September 2013 11:55 CEST | Version of Record | https://www.mdpi.com/1422-0067/14/9/18041/pdf |
