| article html file updated | 5 February 2020 20:37 CET | Update | https://www.mdpi.com/1422-0067/13/6/6620 |
| article html file updated | 8 May 2019 17:44 CEST | Update | - |
| article html file updated | 25 March 2019 11:37 CET | Update | - |
| article html file updated | 17 June 2015 00:11 CEST | Update | - |
| article html file updated | 14 August 2014 12:05 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:05 CEST | Original file | https://www.mdpi.com/1422-0067/13/6/6620/xml |
| article html file updated | 7 February 2013 12:35 CET | Update | - |
| article html file updated | 7 February 2013 02:32 CET | Update | - |
| article html file updated | 6 February 2013 07:59 CET | Update | - |
| article html file updated | 29 January 2013 03:58 CET | Update | - |
| article html file updated | 26 January 2013 10:50 CET | Update | - |
| article html file updated | 23 January 2013 18:42 CET | Original file | - |
