| article html file updated | 5 February 2020 16:41 CET | Update | https://www.mdpi.com/1422-0067/12/3/1431 |
| article html file updated | 9 May 2019 01:59 CEST | Update | - |
| article html file updated | 20 March 2019 05:55 CET | Update | - |
| article html file updated | 16 June 2015 14:26 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/1422-0067/12/3/1431/xml |
| article html file updated | 6 February 2013 20:01 CET | Update | - |
| article html file updated | 5 February 2013 23:55 CET | Update | - |
| article html file updated | 28 January 2013 21:24 CET | Update | - |
| article html file updated | 26 January 2013 01:16 CET | Update | - |
| article html file updated | 22 January 2013 11:16 CET | Original file | - |
