| article html file updated | 5 February 2020 16:56 CET | Update | https://www.mdpi.com/1422-0067/12/4/2158 |
| article html file updated | 9 May 2019 01:29 CEST | Update | N/A |
| article html file updated | 20 March 2019 06:34 CET | Update | N/A |
| article html file updated | 16 June 2015 15:12 CEST | Update | N/A |
| article html file updated | 14 August 2014 12:05 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 12:05 CEST | Original file | https://www.mdpi.com/1422-0067/12/4/2158/xml |
| article html file updated | 6 February 2013 20:31 CET | Update | N/A |
| article html file updated | 6 February 2013 00:23 CET | Update | N/A |
| article html file updated | 28 January 2013 21:51 CET | Update | N/A |
| article html file updated | 26 January 2013 01:52 CET | Update | N/A |
| article html file updated | 22 January 2013 13:28 CET | Original file | N/A |
