| article html file updated | 6 February 2020 00:14 CET | Update | https://www.mdpi.com/1422-0067/14/2/2502 |
| article html file updated | 8 May 2019 09:16 CEST | Update | - |
| article html file updated | 20 March 2019 17:47 CET | Update | - |
| article html file updated | 17 June 2015 05:50 CEST | Update | - |
| article html file updated | 3 December 2013 08:14 CET | Update | - |
| article xml file uploaded | 3 December 2013 08:14 CET | Update | https://www.mdpi.com/1422-0067/14/2/2502/xml |
| article html file updated | 5 March 2013 18:35 CET | Original file | - |
| article xml file uploaded | 5 March 2013 18:35 CET | Original file | - |
| article pdf uploaded. | 25 January 2013 12:17 CET | Version of Record | https://www.mdpi.com/1422-0067/14/2/2502/pdf |
